EXPERIENCE DE PHYSIQUE FONDAMENTALE
Contents
1. e Constante de torsion du ressort The period of a Torsional Pendulum is measured and compared to the theoretical value The torsional pendulum consists of a torsion wire attached to a Rotary Motion Sensor with an object a disk a ring or a rod with point masses mounted on top of it The period of oscillation is measured from a plot of the angular displacement versus time To calculate theoretical period the rotational inertia is determined by measuring the dimensions of the object The torsional spring constant is determined from the slope of a plot of force versus angular displacement The dependence of the period on the torsional constant and the rotational inertia is explored by using different diameter wires and different shaped objects Advantage To determine the torsional spring constant the force versus angular displacement graph is quickly and easily obtained by pulling with a Force Sensor on a string wrapped around the Rotary Motion Sensor pulley Experiment Includes Torsion Pendulum Accessory Large Rod Base Ports 2 Digital 3 Analog 45 cm Steel Rod Connection Serial also USB compatible with Mini Rotational Accessory USB Serial Converter Rotary Motion Sensor Data logging Collect up to 17 000 Analog force Scientific workshop 500 interface Force Sensor voltage etc data points or 7 000 Motion Sensor data Rotational Inertia Experiment ManualDataStudio points File for Rotational Inertia Portable Built in batter2. r oe qquilibrodas _ RL ot pem Table de forces Appareil destin l tude quantitative de la composition et la d composition de forces constitu d une plaque de travail circulaire sur pied stable avec double graduation angulaire Accurate Results The ultra low friction pulleys are the key to the Force Table s accurate results Friction is reduced to a bare minimum for increased sensitivity The swivel feature of the pulleys can virtually eliminate parallax for more precise angle Measurements Includes Write on wipe off 25 cm diameter Table with detachable legs Three adjustable Super Pulleys with Clamps Six mass hangers masses purchased separately Plastic centering ring Spool of string Required Mass and Hanger Set ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz A 3 Physique Fondamentale M canique Dynamique et cin matique Mouvement rectiligne Uniform ment Acc l r s Th mes des exp riences e Mouvement Lin aire Uniforme et Acc l r s e Impacts Elastiques et Inelastiques e Conservation du Moment et de l nergie e Vitesse Moyenne et Vitesse Instantane e Etude du Mouvement avec des frictions negligeables D velopp sp cialement pour l introduction aux experiences de base en m canique Ideal pour des exp riences pratiques grace sa construction robuste et une structure qui ne n cessite aucun entretien Pour l
3. deformation is known as the Yield Point this point can be easily determined from the DataStudio graph Advantage Students can experience the tensile failure of various materials and collect critical measurements real time DataStudio graphs and calculations can be created to extend student understanding of materials science The compact size of the Stress Strain Apparatus makes it ideal for any laboratory or classroom setting Experiment Includes Scientific workshop 500 interface Stress Strain Apparatus Ports 2 Digital 3 Analog Force Sensor Connection Serial also USB compatible with Rotary Motion Sensor USB Serial Converter Stainless Steel Calipers Data logging Collect up to 17 000 Analog force Materials Stress Strain Experiment voltage etc data points or 7 000 Motion Sensor data Manual DataStudio File for Materials Stress Strain points Experiment DataStudio Lite Software Portable Built in battery compartment ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz A 34 Physique Fondamentale M canique Dynamique et cin matique PASCO STRUCTURES SYSTEME Bridge the gap between toothpick construction and EE Ma computer simulation El a a l a Fit A e E amp Data x E The PASCO difference Load Cells amp Amplifier Real time static and dynamic load measurements The PASCO Structures System has 3 options e Truss Set Teach the Basics of Trusses
4. Demonstrate the Properties of l beams Add Load Cells to Measure Loading Students can load the truss by hanging weights Load cells can be inserted into the design by replacing one beam at a time There is no need to completely disassemble the truss to add instrumentation e Bridge Set Larger Set of l beams and Connectors Includes Road Bed and Car See Dynamic Loading as Car Traverses Bridge The Bridge Set includes all the l beams and connectors required to build the bridges shown on this page Special cord locks allow tensioning of cord cables for cross bracing A flexible plastic road bed clips to the cross beams and using load cells the tension and or compression of each element can be displayed in real time as the car traverses the bridge See cover ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz Physique Fondamentale M canique Dynamique et cin matique Bridge Expansion Set Use with Bridge Set Build Larger Suspension Bridges and Cranes Expansion Set Includes Axles and Pulleys Building Cranes The Bridge Expansion Set Includes Axles and Pulleys Required to Build ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz Physique Fondamentale M canique Dynamique et cin matique LA POUSSE D ARCHIMEDE Archimedes Principle e Archimedes Principle e Principe d Archimede e Densi
5. Digital 3 Analog a IDS Photogate Bracket USB Serial Converter Data logging Collect up to 17 000 Analog force voltage etc data points or 7 000 Motion Sensor data points Portable Built in battery compartment Photogate Head Force Sensor Picket Fence Impulse Experiment Manual DataStudio File for Impulse Experiment ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz Physique Fondamentale M canique Dynamique et cin matique CONSERVATION D ENERGIE Conservation of Energie e Conservation of Energy e Conservation D Energie e Centripetal Acceleration e Acceleration Centrifuge e Apparent Weight e Poids Apparent In this experiment the Law of Conservation of Energy is verified by measuring the potential and kinetic energies for a car traveling over hills and loops on a curved track A car is started from rest on a variety of tracks hills valleys loops straight track The speed of the car is measured at various points along the track using a photogate connected to a Smart Timer The potential energy is calculated from the measured height and the kinetic energy is calculated from the speed The total energy is calculated for 2 points on the track and comparedThe height from which the car must be released from rest to just make it over the loop can be predicted from conservation of energy and the centripetal acceleration Then the prediction can be tested on th
6. a 25 4 cm diameter 1 50 kg disk which may be rotated on 2 axes a 12 7 cm diameter 1 42 kg ring and Super Pulley with support rod and adapter 3 The Centripetal Force Accessory with spring support and radius indicator mass support 3 masses and Super Pulley with Clamp Required Mass and Hanger Set Recommended Photogate Head A base Rotational Adapter Required for use with ScienceWorkshop Rotary Motion Sensor ScienceWorkshop 750 ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz A 14 Physique Fondamentale M canique Dynamique et cin matique FORCE CENTRIFUGE Centripetal Force Mean Sache Ere 2 14 per 1 Hal SE me ggh ifretrares ihe gusa anc ragionare baisan CANIN force and ANOTE e Relationship between Radius and Centripetal e La Relation Entre La Force Radial force et La Force Centrifuge e Relationship between Mass and Centripetal e La Relation Entre La Masse Et La Force Force Centrifuge e Relationship between Linear Rotational e La Relation Entre La Vitesse Radial Velocity and Centripetal Force et De Rotation The Centripetal Force Experiment allows students to discover the relationships between centripetal force mass velocity and radius The force and velocity are directly measured with sensors and the mass and radius can easily be changed The rotating arm features a groove with 2 captured masses along its length One of the
7. acceleration of gravity g Experimental setup Measurements of corresponding values of fall time and height permit the determination of the acceleration of gravity using the equation Procedure The experimental setup is shown in the Figure Position the strike plate directly under the release mechanism Cock the release mechanism 1 Place the steel ball in the depression 5 between the contact plates 4 on the release mechanism e Release the steel ball using the push button 3 The timer starts e When the steel ball hits the strike plate the timer stops e The fall height s is measured using a ruler as the distance from the lower edge of the ball when ready for release to the upper surface of the strike plate e Parallax error can be avoided by using the mirror provided e The experiment should be repeated using various values of the fall height and corresponding values of height and time should be noted e g by typing them directly into an Excel spreadsheet It is then a simple matter to compute values of the acceleration of gravity Required Equipment 1980 10 Free Fall Apparatus 1 pcs 2002 60 Student timer or equiv 1 pcs Retort stand and cables ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz Physique Fondamentale M canique Dynamique et cin matique MOUVEMENT DE PROJECTILE Projectile Motion 7al Emale Wh al Here sw be dl NTI Ter M AIR El aa Elle sel
8. analyse quantitative des lois fondamentales de la cin matique et de la dynamique par ex mesure de mouvements constants et acc l r s acc l rations sur un plan inclin conservation du moment et de l nergie impacts lastiques et in lastiques L ensemble comprend Rail a coussin d air section carr longueur de 2m Chariot a coussin d air Accessoire pour coussin d air Soufflerie et tuyau de ronflement Dispositif de lancement c ble connexion C bles de connexion Boite avec bouton poussoir pour la commande du dispositif de lancement Un compteur intelligent Cellules photo lectriques 2 Alimentation stabilis ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz Physique Fondamentale M canique Dynamique et cin matique TABLE A COUSSIN D AIR Themes des exp riences Lois du mouvement de Newton Conservation du moment et de l nergie Impacts lastiques et inelastiques avec masses identiques et diff rentes Mouvements harmoniques et mouvements harmoniques couples Trajectoires R pulsion magn tique La table coussin d air pr sente une surface plane en verre sur laquelle repose le papier d enregistrement et carbone De l air comprim est conduit vers les palets travers des tuyaux L gers L air s chappe sous le palet et laisse graviter celui ci au dessus du papier d enregistrement Le mouvement du palet est marqu par un enregistrement t
9. ere ml AJ ol Ell gp te x a ab TA ap ab 160 1 Es 260 130 ai tai Herael Ramp crn Srudnre can use Mew data fo determing piii igun apis produces te AN TANT range e Independence of x and y Motion e L Ind pendance Du Mouvement Sur x et y e Muzzle Velocity vs Time of Flight e Vitesse De Lancement En Fonction Du e Angle vs Horizontal Range temps De Projection e L Angle En Fonction De l Etendue Method In this series of experiments students use a projectile launcher to better understand the kinematics and dynamics of projectile motion Since measurements for these experiments involve single point measurements of time or velocity the Smart Timer is the ideal timing instrument Muzzle Velocity vs Time of Flight Students fire the projectile at three different velocities from the same height The Photogate and Time of Flight Accessory are used to measure the time of flight at each muzzle velocity Students are also asked to use the kinematics equations to predict the horizontal range given a launch angle and muzzle velocity Carbon paper and a bulls eye can then be used to test their hypothesis Angle vs Horizontal Range The angle of launch is varied and the horizontal range measured for each angle Students produce a graph of angle vs horizontal range The angle of maximum range can then be found This experiment conducted for two cases e Projectile is fired from a higher vertical positi
10. to 17 000 Analog force voltage etc data points or 7 000 Motion Sensor data points Portable Built in battery compartment ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz A 16 Physique Fondamentale Mecanique Dynamique et cin matique AXE DE TORSION L tude des moments d inertie Appareil pour l tude des moments d inertie Themes des exp riences e Oscillations e Determination de moments d inertie avec la m thode par oscillations e Moments d inertie de differents corps g om triques e Th or me de Huygens et ou de Steiner Axe de torsion permettant d tudier les oscillations tournantes et de d terminer les moments d inertie de diff rents chantillons a partir de la p riode d oscillation Avec arbre mont sur billes ressort en volute et barre de retenue Une barre transversale avec des masses mobiles et un disque avec un trou centr et huit trous excentr s pour les exp riences servent d l ments de preuve dans les exp riences destin es determiner les moments d inertie avec un axe de rotation excentr et confirmer la loi de Steiner Jeu d l ments de preuve pour l axe de torsion Accessoires pour l axe de torsion constitu s de deux cylindres avec des masses presque identiques mais une r partition des masses diff rente un disque de logement pour les cylindres un disque en bois et un boule en bois ESLI Tel 021 85 60 65 Fax
11. 021 85 58 88 E mail info esli com dz Site web www esli com dz A 17 Physique Fondamentale M canique Dynamique et cin matique GYROSCOPE CECILE Tals oe eee ee 0e CO 8 Sl sa al i el A Sled ge Themes Counterweight Pee e Tous les composants accessibles precession j Point e Outil de d monstration Excellent E e L indicateur de pr cision d angle 7 Top View Open design lets students stop precession by grabbing the Vertical shaft and observing that the gyroscope dips Rotational mathematics predicts the dipping action but it could never be confirmed with traditional enclosed units How It Works The disk is soun by wrapping a string around the pulley and pulling Or the disks can be spun by hand Add mass to either end of the gyroscope and it responds with a predictable precession Many features make this an exceptional demonstration tool for rotational motion concepts Recommended Gyroscope Disk and Mass Required For use with ScienceWorkshop 2 Rotary Motion Sensors For Recording Nutation Data Rotary Motion Sensor Gyroscope Mounting Bracket For Recording Precession Data A base Rotational Adapte Science Workshop interface ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz A 1 1 8 Physique Fondamentale M canique Dynamique et cin matique PENDULE BALISTIQUE Th mes e Un pr cis de 2 5 des valeurs e Les deux exp rience
12. Built in battery compartment DataStudio Lite Software ESLL Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz Ad 33 Physique Fondamentale M canique Dynamique et cin matique CONTRAINTE ET DEFORMATION DES MATERIAUX Materials Stress Strain AA Sliges ve Sirain for steel BS 8 al sel 4 ew AI El 0s x beled Too BOO syst E 400 cl j Este Region i _ 200 MEF ma m Elope 2051116 0 002 0 004 0 006 0 006 0 070 1 00 Stralr bungs Modulus for steel is determined using a linear curve fit on the glastic portion of the curve e Stress Deformation e Strain Contrainte e Young s Modulus Module de Young e Yield Point Point de Yield Method In this experiment students test a variety of materials by stretching them until failure under the tensile load The sample is placed in the holder and firmly held on both ends By turning the hand crank the sample is stretched in one dimension During the stretching the Force Sensor measures the applied force through the 5 to 1 lever arm This allows the maximum allowable force in the experiment to be 250 N simultaneously the Rotary Motion Sensor measures the stretch of the sample real time Using DataStudio software the stress and strain can be calculated and graphed versus one another The slope of the stress strain graph in the elastic region is Known as Young s Modulus The transition between elastic and plastic
13. Frequency 5 j i This graph shows the resonance curves fampitude vs frequency for 3 different settings of magnetic damping Resonance Curves for an Oscillator Courbe de Resonance De L Oscillateur Amplitude Vs Frequency Amplitude En Fonction De La Frequence Resonant Frequency Frequence De Resonance Period of a Pendulum Periode Du Pendule Effect of Magnetic Damping on Shape of e L Effet d Un Aimant Sur La Courbe De Resonance Curve Resonance Phase Difference Between Oscillator and Difference De Phase Entre L oscillateur Et Le Driver at Low Resonant and High Vibrateur Pour La Frequence De Resonance Frequencies Les hautes et Faibles Frequences In this experiment the resonance of a driven damped harmonic oscillator is examined by plotting the oscillation amplitude versus frequency for various amounts of damping The oscillator consists of an aluminum disk with a pulley connected to two springs by a string The angular positions and velocities of the disk and the driver are recorded as a function of time using 2 Rotary Motion Sensors Experiment Includes Scientific workshop 500 interface Rotary Motion Sensors 2 Ports 2 Digital 3 Analog Mechanical Oscillator Driver Connection Serial also USB compatible with Chaos Driven Harmonic Accessory USB Serial Converter Large Rod Base Data logging Collect up to 17 000 Analog 120 cm Steel Rods 2 force voltage etc data points or 7 000 45 cm Steel Rod Motion S
14. Motion Sensor Hover Puck ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz A 1 6 Physique Fondamentale M canique Dynamique et cin matique Conservation du mouvement Conservation of momentum e Conservation of Momentum in Elastic and Inelastic Collisions e Kinetic Energy not Conserved in Inelastic Collisions e Kinetic Energy Temporarily Stored as Magnetic Potential Energy During Elastic Collisions Using Magnetic Bumpers The total momentum and total energy of carts undergoing elastic and inelastic collisions are measured The values before and after the collisions are compared to verify that momentum is conserved in all collisions while energy is only conserved in elastic collisions Elastic and inelastic collisions are performed with 2 dynamics carts of different masses Magnetic bumpers are used in the elastic collision and Velcro bumpers are used in the completely inelastic collision In both cases momentum is conserved Cart velocities are recorded using 2 Rotary Motion Sensors connected to the carts by string wrapped around pulleys This measurement method adds very little friction to the experiment and since the velocities are continuously monitored any deceleration due to friction can be measured A real time graph of velocity versus time is obtained for each cart clearly showing when the collision occurred This enables the student to determine the cart v
15. OOIIT Sdandard Ceuiaton b O00974 5 ws h d a A known torque is applied to the ring and disk by the weight hanging over the pulley The rotational inertia of the ring and disk are determined from the resulting angular acceleration The procedure is repeated for the disk alone e Rotational inertia of a ring and a disk e Moment D inertie Du Disc e Torque e Couple Et Moment In this experiment the rotational inertias of a ring and a disk are determined by applying a torque to the object and measuring the resulting angular acceleration A Known torque is applied to the pulley on the Rotary Motion Sensor causing a disk and ring to rotate The resulting angular acceleration is measured using the slope of a graph of angular velocity versus time The rotational inertia of the disk and ring combination is calculated from the torque and the angular acceleration The procedure is repeated for the disk alone to find the rotational inertias of the ring and disk separately Advantage Friction in this compact setup can be neglected The Rotary Motion Sensor is a versatile tool which can be used in a variety of other experiments Experiment Includes Large Rod Base Scientific workshop 500 interface 90 cm Steel Rod Mini Rotational Accessory Ports 2 Digital 3 Analog Drilled Mass amp Hanger Set 5 g resolution Connection Serial also USB compatible with Rotary Motion Sensor USB Serial Converter Data logging Collect up
16. Physique Fondamentale M canique Dynamique et cin matique On EXPERIENCE DE PHYSIQUE FONDAMENTALE MECANIQUE DYNAMIQUE ET CINEMATIQUE INTRODUCTION AU SYSTEME MECANIQUE INTRODUCTORY MECHANICS SYSTEM Lt 4 Formulas and Variables can be written on the experiment board with a a dry erase marker then o wiped clean Porcelain coated Steel mo 5 Ps i ras E b i O l LR Meath weet a All the Accessories Required f including thraad mass O hangers and masses And than analyze forces an an inclined mana The ML plumb bob indicator allows incination angies to be raad from a built in scale EN Experiment 8 ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz A11 Physique Fondamentale Mecanique Dynamique et cin matique Investigate static and siding fiction Experiment Typical Experiments Experience Typique Basic Experiments Experiences De Base 1 Measuring Forces Hooke s Law 1 Mesure de Force Loi de Hooke 2 Adding Forces Resultants and Equilibrants 2 Sommation des Forces Forces R sultantes 3 Resolving Forces Components 3 Resolving Forces Components 4 Torque Non parallel Forces 4 Moment Forces Parall le 5 Torque Parallel Forces 5 Moment Forces non Parallele 6 Center of Mass 6 Center of mass Advanced Experiments Experiences De Base 7 Equilibrium of Physical Bodies 7 L
17. Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz Physique Fondamentale Mecanique Dynamique et cin matique OSCILLATION COUPLEES Themes de l exp rience e Enregistrement de l oscillation en phase et determination de la p riode d oscillation T e Enregistrement de l oscillation en opposition de phase et determination de la p riode d oscillation T e Enregistrement d une oscillation coupl e et determination de la p riode d oscillation T ainsi que de la periode de battement To e Comparaison des valeurs mesur es avec celles mesur es a partir des p riodes d oscillation propres 7 et T e Objectif Enregistrement et evaluation des oscillations de deux pendules identiques couples e Resume L oscillation entre deux pendules identiques couples peut tre caract ris e par la p riode d oscillation et la p riode de battement La p riode de battement repr sente l cart entre deux moments o un pendule oscille une amplitude minimum Les deux grandeurs peuvent tre calcul es a partir des deux p riodes de battement propres pour l oscillation en phase et l oscillation en opposition de phase et des pendules couples ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz Physique Fondamentale M canique Dynamique et cin matique OSCILLATIONS HARMONIQUES Driven Damped Harmonic Oscillator
18. alimentation 230 V 50 60 Hz Bo tier bo tier m tallique vitr de tous c t s avec porte frontale 4 pieds r glables en hauteur Mesure du plan d oscillation projection d ombre du fil un pendule Resolution angulaire 0 1 Dimensions 400x400x1400 mm Masse env 40 kg ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz A 1 24 Physique Fondamentale M canique Dynamique et cin matique PENDULE TOURNANT D APRES LE PROF POHL Themes des experiences Oscillations libres avec differents amortissements oscillations avec amortissement modere oscillation aperiodique et cas limite aperiodique Oscillations forc es et courbes de resonance avec differents amortissements D calage de phase entre l excitateur et le resonateur en cas de resonance Oscillations chaotiques entretenues Pour l analyse d oscillations libres forc es et chaotiques en presence de differents Amortissements Le syst me oscillant est constitu d une roue en cuivre mont e sur un roulement billes et reli e la barre de l excitateur par un ressort spiral Le pendule tournant est mis en mouvement par un excentrique avec un moteur lectrique avec vitesse r glage grossier et fin Un frein lectromagn tique courants de Foucault est utilis pour l amortissement L excitateur et le r sonateur sont pourvus d une bague gradu e avec des fentes et des pointeurs L appare
19. d G Experiment Includes Gravitational Torsion Balance AP 8215 X Y Adjustable Diode Laser 45 cm Steel Rod Large Table Clamp The large lead balls are rotated to produce a torque on Universal Gravitational Constant Experiment Manual the beryllium torsion band The angular displacement of the band causes the reflected laser beam to be displaced which is used to calculate G Advantage Gravitational Torsion Balance features a rugged torsion band that rarely needs to be replaced If the band fails it can be replaced using a screwdriver in less than 10 minutes In addition a U shaped groove in the housing allows students to damp the oscillation of the small lead balls reducing measurement time from hours to minutes Finally an equilibrium adjustment knob on the top of the unit allows the angle of the mirror to be easily adjusted ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz Physique Fondamentale M canique Dynamique et cin matique LOIS DE HOOK Themes e Un indicateur en couleur e Echelle de mesure transparente e Compatible avec les jeux de masse PASCO Brightiy calor ed sect moicaior gige STUNT is Sac measure ME ro Of D SOIN The Hooke s Law Set allows students to investigate the relationship between the force applied to a spring and the amount of stretch on the spring This rugged set features a heavy base to allow the stretching of spri
20. e roller coaster If the car is released from the top of the hill so it easily makes it over the top of the loop the speed of the car can be measured at the top of the loop and the centripetal acceleration as well as the apparent weight normal force on the car can be calculated Advantage The Roller Coaster can be configured in many ways The white board background is convenient for writing calculations or making marks for measuring heights The PASCO Roller Coaster differs from conventional roller coaster toys in 3 ways The speed and height of the Roller Coaster car can be easily measured the loss of energy due to friction is generally only about 5 and the cars will withstand repeated drops to the floor Experiment Includes Complete Roller Coaster System Photogate Heads 2 Smart Timer Conservation of Energy Experiment Manual ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz A 9 Physique Fondamentale M canique Dynamique et cin matique APPAREIL DE CHUTE LIBRE Th mes des exp riences Enregistrement point par point du diagramme de distance et de temps d un mouvement acc l r r gulier Confirmation de la proportionnalit entre la distance de la chute et le carr du temps de chute Determination de l acc l ration de la pesanteur g Discover Freefall System can be used to drop almost any small object by attaching a small steel washer with a small adhesive pad bot
21. e spring is measured directly from a meter stick The manual sampling feature of Data Studio allows students to save measurements of force for each of the chosen deformations of the spring Once the data is collected students can easily create a Force vs Stretch or Compression graph by dragging their table of data to the Graph icon The slope of this graph is known as the spring constant while the vertical intercept is the initial loading force Various springs of different construction are included so students can better understand the physical meaning of the spring constant Advantage The Force Sensor allows students to take direct measurements of force for each compression or elongation of the spring This is superior to using a hanging mass to apply a force since students don t have to convert from mass to force In addition students are applying the forces to the springs and will have a beiter kinesthetic feel for the amount of force being applied in each case Experiment Includes Demonstration Spring Set Scientific workshop 500 interface Force Sensor Ports 2 Digital 3 Analog Universal Table Clamp Connection Serial also USB compatible with Heavy Spring Bumper USB Serial Converter Light Spring Bumper Data logging Collect up to 17 000 Analog Four Scale Meter Stick force voltage etc data points or 7 000 Hooke s Law Experiment Manual DataStudio Motion Sensor data points Files for Hooke s Law Experiment Portable
22. elocities immediately before and after the collision The kinetic energy before and after the collision is also studied Kinetic energy is not conserved for inelastic collisions It is also demonstrated that kinetic energy momentarily decreases during the elastic collision and then returns to the original value after the collision ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz e Conservation Du Mouvement Dans La Collision Elastique Et Inelastique e L Energie Cinetique n est Pas Conservee Dans Les Collisions In lastiques e L Energie Cin tique Est Conservee Temporellement Comme Un Potentiel Magnetique D Energie Durant La Collision Elastique Par Un PARE CHOCS D aimant COLOSIO CEE CLIS Experiment Includes 2 2 m PAScar Dynamics System Dynamics Track Mount 2 RMS IDS Adapters 2 Rotary Motion Sensors 2 onservation of Momentum Experiment Manual DataStudio File for Conservation of Momentum Experiment Scientific workshop 750 interface Ports 2 Digital 3 Analog Connection Serial also USB compatible with USB Serial Converter Data logging Collect up to 17 000 Analog force voltage etc data points or 7 000 Motion Sensor data points Portable Built in battery compartment AL Physique Fondamentale M canique Dynamique et cin matique VARIATION DU MOMENT ET FORCE Impulse k Le nin 386 cm uin 38 ene LE voii 483 Cris Area
23. ensor data points Multi Clamps 2 Portable Built in battery compartment Braided Physics String Power Supply 18V DC 5 A Banana Plug Cord Red 5 pack Power Amplifier II Driven Damped Harmonic Oscillations Experiment ManualDataStudio File for Driven Damped Harmonic Oscillations Experiment ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz Physique Fondamentale M canique Dynamique et cin matique OSCILLATIONS FORCEES ET EXPERIENCE DE CHAOS Chaos Ci m ibh e E Meigen ee d a E MS te KZ e Nonlinear Oscillator e Oscillateur Non Lin aire e Chaotic Motion e Mouvement De Chaotic e Phase Space e La Phase Des Espaces e Poincare Plot e Granhe De Poincar The chaotic behavior of a driven nonlinear pendulum is explored by graphing its motion in phase Space and by making a Poincare plot These plots are compared to the motion of the pendulum when it is not chaotic Poincare Plot The oscillator consists of an aluminum disk connected to 2 springs A point mass on the edge of the aluminum disk makes the oscillator nonlinear The frequency of the sinusoidal driver can be varied to investigate the progression from predictable motion to chaotic motion Magnetic damping can be adjusted to change the character of the chaotic Advantage DataStudio can graph the motion in phase space and superimpose the Poincare plot in real time showing students how the mo
24. etermine all three of Newton s Laws e Newton s First Law Students use a Motion Sensor to collect data for various sliding rolling and hovering objects Using the data and their observations students better understand that an object s motion will not change unless acted upon by an external net force e Newton s Second Law Students use a Force Sensor and Motion Sensor with Dynamics System to discover the relationships between force mass and acceleration e Newton s Third Law Using two Force Sensors students prove that forces between objects are equal in magnitude yet opposite in direction These experiments include both tug of war exercises and collisions between cars Advantage Using this set of equipment and probeware students will better understand all three of Newton s Laws The integration between the probeware and equipment helps students focus on the physics of each experiment Expriment Includes Scientific workshop 500 interface PAScar Dynamics System EL Force Sensor 2 Ports 2 Digital 3 Analog Connection Serial also USB compatible with USB Serial Converter Data logging Collect up to 17 000 Analog force Discover Friction Accessory voltage etc data points or 7 000 Motion Sensor data Smart Pulley with Clamp points Mass and Hanger Set Portable Built in battery compartment Physics String Newton s Laws Experiment Manual DataStudio File for Newton s Laws Experiment Data Studio Lite Software
25. h are included in the system Using an electric switch timing is started automatically just as the object is dropped and the Time of Flight Pad stops timing when the object strikes it Students can investigate the effect of air resistance on acceleration In addition students can drop objects of the same size but different mass to study how object mass affects terminal velocity during freefall The drop box has a magnetic mount for attaching to metal frames in ceilings Experiment Includes Drop box Release labels for attaching Required Control cable washers to object 50 Smart timer Control box Small nylon ball Large base AC adapter large plastic ball 25cm steel rod Time of Flight receptor pad Golf ball 100cm steel rod Timer Switch Hollow golf ball Universal bosshesd Release washers 10 1 steel ball ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz A 10 Physique Fondamentale M canique Dynamique et cin matique APPAREIL DE CHUTE LIBRE Free fall apparatus ct Ex Release Mechanism Fr Strike Plate By In order to ensure as good an electrical contact as possible the contact plates and the steel ball are gold plated and they should be kept perfectly clean They can be cleaned using an organic solvent such as alcohol Thin cotton gloves can be used to avoid problems due to sweat from fingers and hands Purpose The goal of this experiment is to determine the
26. il peut aussi tre utilis en d monstration pour la projection d ombres Avec moteur lectrique mont sur la plaque de base Fr quence propre env 0 5 Hz Fr quence d excitateur 0 a 1 3 Hz r glable en continu Connexions Moteur max 24 V CC 0 7 A par douilles de 4 mm Freins courants de Foucault 0 24 V CC max 2 A par douilles de 4 mm Bague gradu e diam tre 300 mm Dimensions 400x140x270 mm Autres quipements requis Alimentation CC pour pendule tournant Chronometre Multimetres 02 Cables d experimentation ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz A1 25 Physique Fondamentale Mecanique Dynamique et cin matique APPAREIL D OSCILLATIONA P n Pour l analyse et la demonstration d oscillations harmoniques et forc es jusqu la fr quence de r sonance Une bobine d inductance et un g n rateur de fonctions font osciller un ressort suspendu librement dans un tube en plexiglas et muni d un poids Un aimant permanent fourni peut tre fix l extr mit inf rieure des ressorts Ainsi les oscillations libres peuvent tre enregistr es par le biais de la bobine d inductance par un enregistreur un oscilloscope m moire num rique ou une interface Dimensions Plaque de base 200 mm x 200 mm Tube 510 mm x 45 mm Connexions douilles de 4 mm Equipment n cessaire G n rateur de fonction ESLI
27. incelles Dans les tuyaux d air se trouvent de fines cha nes m talliques qui tablissent la liaison avec le g n rateur d tincelles Au contact du palet une tincelle se forme au milieu de celui ci et laisse une trace sur le papier d enregistrement Comme les palets ont un poids de 550 grammes leur mouvement n est pas att nu par les tuyaux ni le fil tincelles L ensemble comprend 1 table d exp riences avec surface en verre 580x580 mm 1 g n rateur d tincelles avec interrupteur au pied 1 compresseur avec tuyau 2 palets en acier diam tre 75 mm 550 g 2 colliers pour palet avec fermeture velcro 2 ressorts 1 poids additionnel pour palet 150 g 1 galet de renvoi diam tre 45 mm 1 barre m diane avec ventouse 1 jeu de papier d enregistrement 1 mode d emploi en anglais ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz A 5 Physique Fondamentale M canique Dynamique et cin matique LOI DE NEWTON Newton Law rl Forca vs cceleration g alal elle el 77 Fi ml Al of El Data x Er 070 0 60 oe 50 1 40 50 30 0 20 OO 02 OF QG OF 43l 14 14 Acceleration mars e Newton s First Law Inertia e La Premi re Loi De Newton e Newton s Second Law F ma e La Deuxieme Loi De Newton e Newton s Third Law Fas FBa e La Troisieme Loi De Newton Method Students use this collection of equipment to discover or experimentally d
28. masses is free to move along the length of the groove The free mass is connected to a small cable that runs under a pulley in the center of the arm and up to a Force Sensor A ball bearing swivel is used to ensure the cable does not tangle as the arm rotates The other mass is placed the same distance from the center as the free mass thereby balancing the arm A flag attached to the bottom of the fixed mass passes through the photogate once per revolution allowing DataStudio to calculate the angular and tangential velocity of the mass Expriment Includes Scientific workshop 500 interface Centripetal Force Apparatus ES Economy Force Sensor Ports 2 Digital 3 Analog Photogate Head Connection Serial also USB compatible with Large Rod Stand USB Serial Converter Data logging Collect up to 17 000 Analog force 90 cm Steel Rod voltage etc data points or 7 000 Motion Sensor data Multi Clamp points 45 cm Steel Rod Portable Built in battery compartment Triple Output Power Supply Centripetal Force Experiment Manual Data Studio File for Centripetal Force Experiment Data Studio Lite Software ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz A 15 Physique Fondamentale M canique Dynamique et cin matique INERTIE DE ROTATION Rotational Inertia tational inertie 0E Es EN ENEIT Fa Ea e on Er m m Cho pea O22197 Hat intercepts 00114 r 03196 tirdardCgvhathn M
29. ngs without toppling the unit The transparent scale can be moved vertically to align zero with the brightly colored stretch indicator ji a E Fe Transparent Scale IF our tadis hcluded i ans wot Assy fare As a force is applied to the spring by placing mass on the hanger the spring stretches Students can graph the applied force vs spring stretch The slope of this graph is the spring constant of the spring The vertical intercept shows the Initial force needed to begin stretching the spring Includes Stand with heavy base Transparent scale with mm resolution Horizontal support for spring Brightly colored stretch indicator Three springs with identical diameter and length but different spring constants Three of each spring included for a total of nine springs spring constants ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz A 39 Physique Fondamentale M canique Dynamique et cin matique LOIS DE HOOKE Hooke s Low E Pilk af i Ea Te TE e Relationship between Force and e La Relation Entre La Force Et La Spring Deformation Deformation Du Ressort e Investigate both Spring e Etudie La Compression Et La Compression and Extension D formation Du Ressort Method In this experiment students use a Force Sensor to measure the force exerted to either compress or extend various springs The stretch or compression of th
30. on than its landing position e Projectile is fired from the same vertical position as its landing position Students are also asked to use the kinematics equations to predict the horizontal range given a launch angle and muzzle velocity Carbon paper and bulls eye can then be used to test their hypothesis Experiment Includes Mini Launcher Carbon Paper smart Timer Metric Measuring Tape Time of Flight Accessory Projectile Motion Experiment Photogate Head 2 Manual DataStudio Photogate Bracket Files for Projectile Motion Universal Table Clamp Experiment DataStudio Lite Software ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz A 1 1 2 Physique Fondamentale M canique Dynamique et cin matique MOUVEMENTS DE ROTATION ET MOMENT D INERTIE Syst me de rotation sur coussinet d air Th mes des exp riences Mouvements de rotation uniformes et acc l rations constantes Lois de Newton sur les mouvements de rotation Moment d inertie et moment de rotation D termination par l exp rience du moment d inertie Oscillations tournantes harmoniques Syst me de rotation sur coussinet d air Syst me d appareils permettant d tudier les mouvements de rotation sans friction Une petite poulie tournante graduation angulaire porte une barre transversale pour soutenir des masses La poulie repose sur un coussinet d air l axe de rotation tant impos par un dispositif de centrage Une
31. ossible de faire la demonstration du mouvement a l aide d un pointeur optique tendue de la livraison 1 balance de torsion de Cavendish 1 logiciel de mesure 1 cable USB ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz A 30 Physique Fondamentale Mecanique Dynamique et cin matique CONSTANT DE GRAVITATION UNIVERSELLE Universal Gravitational Constant e Measure the Universal Gravitational e Mesure De La Constante De Gravitation Constant Universelle e Recreate Cavendish s Historial Expriment e Realise L historique Experience De Cavendish s In the Universal Gravitational Constant Experiment students measure the attractive force between 2 sets of lead spheres Using this force the mass of each sphere and the separation of the spheres the universal gravitational constant can be determined The attraction between a pair of small lead spheres and a pair of larger lead spheres is measured by the torsion of a beryllium ribbon The large spheres are placed close to the small spheres and allowed to equilibrate A laser is reflected from a mirror on the beryllium ribbon and shown on a screen or wall The large spheres are then rotated through an angle to produce torque on the ribbon The mirror rotates with the ribbon thus the laser reflection on the screen or wall is displaced The displacement of the laser reflection is measured and an optical lever calculation is used to fin
32. poulie de renvoi et une poulie tages transmettent le poids de la masse d entra nement via un cordon Les mouvements de rotation tr s lents peuvent tre mesur s la main avec un chronom tre On peut aussi utiliser un compteur num rique qui est lanc par le dispositif de d clenchement fourni puis arr t par le signal d un d tecteur de r flexion laser au moment du passage z ro Graduation angulaire 0 360 Division de la graduation 1 Longueur de la barre porte poids env 440 mm Rayons des perforations 30 210 mm Pas des perforations 20 mm Rayons de la poulie tages 5 0 mm 10 0 mm 15 0 mm Moment d inertie de la poulie tournante avec barre porte poids env 0 16 g m Moment d inertie max env 7 1 g m Couple d entrainement min env 0 05 mN m Couple d entrainement max env 0 60 mN m ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz Physique Fondamentale M canique Dynamique et cin matique SYSTEME ROTATIONNEL Th mes e Un systeme rotationnel polyvalent e Une base stable de 4kg en fer e Double Roulements a billes a faible friction The Complete Rotational System includes 7 Rotating aluminum platform with 4 kg cast iron base dual ball bearings Stainless steel shaft 3 step pulley 2 rectangular sliding 300 g masses and 50 cm track where a number of accessories may be mounted 2 The Rotational Inertia Accessory with
33. pteur de Hall en un signal lectrique proportionnel l angle de d viation Ce Signal peut tre conduit a une interface un enregistreur XY ou un oscilloscope permettant ainsi d enregistrer l oscillation Masse du pendule d pla able Longueur de pendule 1 m Masse du pendule 1 kg Tension de sortie 5 V R sistance a la sortie 500 Erreur 1 pour lt 14 sin lt 0 24 Alimentation 12 16 V CA sans terre Diam tre de tube 10 mm Masse env 0 3 kg Autres equipements requis Materiel de support Alimentation CA CC Oscilloscope num rique ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz A 23 Physique Fondamentale M canique Dynamique et cin matique PENDULE DE FOUCAULT Pour la mesure quantitative et la preuve qualitative de la rotation terrestre Une excitation lectromagn tique maintient l oscillation du pendule continuellement un mouvement La position du plan d oscillation peut tre lue avec pr cision avec un laser l aide d un dispositif de mesure optique Des valeurs quantitatives de la vitesse angulaire peuvent tre obtenues tr s rapidement Longueur du pendule 120 cm Masse du pendule 230 g Diam tre 38 mm Amortissement d oscillations elliptiques anneau de Charron Commande par capteur photoelectrique Exercice des forces lectro aimant Force d excitation r glable en continu Tension d
34. quilibre des corps physique 8 Forces on an Inclined Plane 8 Les Forces Sur Les Plan Incline 9 Sliding Friction 9 Frottement Par Glissement 10 Simple Harmonic Motion Mass on a Spring 10 Mouvement Harmonique Simple Masse sur le 11 Simple Harmonic Motion the Pendulum ressort Simple Machines 11 Mouvement Harmonique Simple pendule 12 The Lever Machines Simple 13 The Inclined Plane 12 The Level 14 The Pulley 13 Plan incline 15 Designing a Balance Beam 14 La poulie 15 Concevoir une Poudre de Balance Includes e Experiment Board 40 x 45 cm porcelain coated steel surface e Spring Balance calibrated in Newtons g and cm with zero adjust e Three Pulleys 2 small 1 large e Degree Scale with holding pin and force ring e Torque Wheel with 4 torque Indicators e Balance Bar with pivot and 2 sliding hooks e Inclined Plane with plumb bob and degree scale e Rolling Mass with two way bracket e Friction Block variable area wood and Teflon surfaces e Planar Mass for center of mass Measurements e Double Pulley Block for block and tackle experiments e Three Mass Hangers 5 g e Brass Masses 2 x 100g 2 x 50g 4x 20g 2x10g e Thread e Experiment Manual fully illustrated with worksheet style experiments ESLL Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz Ad 9 Physique Fondamentale M canique Dynamique et cin matique APPAREIL POUR LA DECOMPOSITION DES FORCES
35. s lastiques et in lastiques e Lanceur de projectiles Applying the laws of Conservation of Energy and Conservation of Momentum to calculate the Velocity of a projectile with no more than simple mass and distance mea surements has made this a classic physics demonstration How It Works A projectile is fired into a pendulum causing it to rise Using the projectile mass the pendulum mass and the rise in pendulum height students can calculate the gravitational potential energy of the system Since the potential energy is equal to the pendulum s kinetic energy at the lowest point students can calculate the speed of the pendulum at impact Applying the Law of Conservation of Momentum the projectile s speed is easily calculated Includes Ballistic Pendulum and Base Projectile Launcher 2 5 cm Plastic Balls 2 2 5 cm Steel Balls 2 Masses 2 2 D Collision Accessory safety Glasses 2 pairs Operations and Experiment Manual Recommended Large C clamp ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz A 19 Physique Fondamentale M canique Dynamique et cin matique PENDULE DE TORSION Torsional Pendulum e Period of a Torsional Pendulum e Rotational Inertias of a Disk Ring and Point Masses e Torque e Tensional Spring Constant e Periode Du Pendule De Torsion e Moment D inertie De Torsion Du Disc Anneau Et Point De Masse e Moment de Rotation
36. s 020 ME Ares 037 Hs o Li k o LL 0 25 Time j e Impulse Change in Momentum e Changement Du Moment e Impulse Area Under a Force Versus Time e Surface Sous Pression En Fonction Du Curve Temps e Different Shaped Force Curves for Elastic e Les Diff rentes Formes Des Courbes De and Inelastic Collisions La Collision Elastique et In lastique In this experiment the impulse on a cart is determined in two ways by measuring the change in velocity and by finding the area under a force versus time curve A cart runs down a slightly inclined track and collides with a Force Sensor equipped with either a clay bumper spring bumper or magnetic bumper To determine the change in momentum impulse the speeds before and after the collision are recorded with a photogate The photogate is also used to trigger the beginning of data collection for the Force Sensor To confirm the impulse the force versus time is plotted and the impulse is determined by finding the area under the curve Different shaped curves of force versus time are obtained for the different bumpers The spring and magnetic bumpers result in nearly elastic collisions while the clay produces a completely inelastic collision The area under the clay force curve is half the area under the spring or magnetic force curves because the cart does not rebound in the clay collision Experiment Includes Scientific workshop 500 interface 1 2 m PAScar Dynamics System Ports 2
37. ta logging Collect up to 17 000 Analog force Rotary Motion Sensor CI 6538 voltage etc data points or 7 000 Motion Sensor Variable g Pendulum Experiment Manual data points DataStudio File for Variable g Pendulum Portable Built in battery compartment Experiment ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz A 21 Physique Fondamentale Mecanique Dynamique et cin matique PENDULE PHYSIQUE The apparatus can be used for accurate determinations of the acceleration due to gravity It is supplied with two weights which can be moved on the support rod to change the moment of inertia and the center of gravity The pendulum is supplied with a robust support stand with a holder for the pendulum rod Diameter of the weights is 50 mm Mass 225 g Support stand 200 x 140 mm Height incl support 295 mm Total mass 2 5 kg ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz _ A 1 22 Physique Fondamentale Mecanique Dynamique et cin matique PENDULE AVEC CAPTEUR DE DEPLACEMENT Oscillations pendulaires comme fonction du temps systeme pendulaire avec logement en pointe a faible frottement et capteur de deplacement lectromagn tique Permet d tudier les oscillations harmoniques l amortissement par le frottement de l air l oscillation coupl e et les figures de Lissajous La d viation du pendule est convertie par un ca
38. te e Densite e Buoyant Force e Pouss d Archim de Broyant force Archimedes Principle states that the buoyant force on a submerged object is equal to the weight of the fluid that is displaced by the object The buoyant force on several objects is measured by weighing the water displaced by a submerged object The buoyant force is also determined by measuring the difference between the object s weight in air and its apparent weight in water some of the objects have the same density some have the same volume and some have the same mass The density of each object is measured and the dependence of the buoyant force on density mass and volume is explored Advantage The provided objects have related volumes masses and densities to demonstrate that only the volume of water displaced affects the buoyant force The experiment can also be performed using a PASPORT Force Sensor instead of a balance Experiment Includes Density Set Force Sensor Overflow Can Force Sensor Balance Stand Large Rod Base 1000 ml Beaker 45 cm Steel Rod 100 ml Beaker Flexible Tubing Long 50 ml Graduated Cylinder Physics String Archimedes Principle Experiment Triple Beam Balance Manual DataStudio File for Archimedes stainless Steel Calipers Principle Experiment DataStudio Lite Software ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz A 37 Physique Fondamentale M canique Dynamique et cin ma
39. tion in phase space relates to actual motion of the oscillator ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz Physique Fondamentale Mecanique Dynamique et cin matique BALANCE DE TORSION DE CAVENDISH La constante gravitationnelle Balance de torsion d apr s Cavendish permettant de d montrer la force gravitationnelle existant entre deux masses et de determiner la constante gravitationnelle Grace a la courte dur e d oscillation de 2 a 4 minutes il est possible de d terminer la constante gravitationnelle avec une precision sup rieure a 10 pendant une seule heure de cours La partie essentielle de cette balance consiste en un pendule de torsion forme d une barre l g re comportant deux petites masselottes en plomb et suspendue a un fil tres fin La position de repos est influenc e par la force d attraction qu exercent les deux grosses masselottes en plomb sur les petites masselottes Apr s avoir fait pivoter les grosses masselottes dans une nouvelle position le pendule de torsion oscille autour de la position de repos modifi e Il est possible de mesurer le mouvement de rotation l aide d un capteur diff rentiel capacitif ce dernier limine la plus grande partie des composantes de bruit et de vibration du signal et proc de un enregistrement informatique Les donn es pourront tre export es dans un tableur dans le but d une valuation ult rieure Il sera galement p
40. tique APPAREIL DE VENTURI Venturi Apparatus Th mes e Bernoulli e Venturi e Equation de continuit The Venturi apparatus has a channel with varying cross section to study the relationship between flow speed and pressure The open design 2 D cross section allows students to see inside and directly measure all needed dimensions There are four built in ports to attach pressure sensors to measure the pressure at four places along the stream line simultaneously Pressure changes caused by both fluid speed and viscosity drag can be measured lll y GU SUTRA ef al Al El gO of EME a i arte donne i i ke re Te FAN et l j i i Siih ml EE os Co FRE B earar nn p The graph shows pressure data at three different flow rates P2 and P4 are in the Venturi constrictions The flow rate is calculated using Motion Sensor data of the water level in the graduated cylinder ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz _ A 1 38 Physique Fondamentale Mecanique Dynamique et cin matique VISCOSIMETRE ROTATIONELLE Fungilab ur u a i Main features Add essential performances to determine viscosity and other rheological features of homogeneus samples Technical data e Precision 1 of full scale e Resolution o With low viscosity adapter 0 01 o For lower than 10 000 viscosity cP 0 1 o For viscosity eq
41. ual to or above 10 000 cP 1 e Repeatability 0 2 e Thermometer features o 0 C to 100 C 32 F to 212 0 F o Resolution 0 1 C 0 1722 F o Precision 0 1 C o Type of probe PT100 e Supplied at 100 240 VAC 50 60 Hz ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz Physique Fondamentale M canique Dynamique et cin matique VISCOSIMETRE A CHUTE DE BILLE Main features The VISCO BALL viscometer with its special glass ball provides accurate viscosity measurements of transparent Newtonian liquids and gases For applications in research processing and quality control departments Complies with DIN 53015 and ISO 12058 standards accepted as an official reference instrument Provides unsurpassed accuracy when backed up by FUNGILAB s precise temperature control Technical data Measuring Principle the falling ball viscometer VISCO BALL is based on the H ppler measurement system It measures the time taken by a solid sphere to travel the reference distance through an inclined tube filled with the sample A return constant may be established by turning the tube upside down The test results are given as dynamic viscosity in the internationally standardised absolute units of mill Pascal seconds mPa s ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz
42. y compartment Experiment DataStudio Lite Software ESLI Tel 021 85 60 65 Fax 021 85 58 88 E mail info esli com dz Site web www esli com dz Ad 20 Physique Fondamentale Mecanique Dynamique et cin matique PENDULE A GRAVITATION VARIABLE Variable g Pendulum e Period of a Simple Pendulum e Effect of Decreasing g on the Pendulum Period e Large Amplitude Period e Shape of Displacement Velocity and Acceleration Curves for Large Amplitude Periode Du Pendule Simple Effet De La D croissance De La Gravitation Sur La Periode Du Pendule Periode Du Large Amplitude La Forme De La Courbe De Deplacement Vitesse Et Acceleration Pour Les Amplitudes larges This experiment explores the dependence of the period of a simple pendulum on the acceleration due to gravity and on the length and amplitude of the pendulum A simple rigid pendulum consists of a 35 cm long lightweight 28 g aluminum tube with a 150 g mass at the end mounted on a Rotary Motion Sensor The pendulum is constrained to oscillate in a plane tilted at an angle from the vertical This effectively reduces the acceleration due to gravity because the restoring force is decreased Experiment Includes Scientific workshop 500 interface Large Rod Base ME 8735 Ports 2 Digital 3 Analog 45cm Steel Rod ME 8736 Connection Serial also USB compatible with Variable g Pendulum Accessory ME 8745 USB Serial Converter Pendulum Accessory 003 05971 Da
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