# MECHANICS EXPERIMENTS

Mechanics is the branch of Physics dealing with the study of motion. It is the science which deals with the physical state of rest or motion of bodies under the action of the forces. The major division of the mechanics discipline separates classical mechanics from quantum mechanics.

### CENTRIPETAL FORCE AND MOMENT OF INERTIA

• Easy setup.
• Computer connectivity.
• Labquest mini may be used in other experiments also.
• Sturdy base.
• Centripetal force.
• Moment of inertia.
• Oscillation period
• Angular speed.
• Restoring force.
• Axis of rotation.
• Center of gravity.

### Computerized Cavendish Balance

Principle and Working:
In this set-up, the angular acceleration of a beam containing two small lead balls is measured by an interface system that contains an integrated capacitive sensor. This angular deflection results from the gravitational attraction of two large lead balls held on a swivel arm onto the small lead balls on the beam. The beam containing the two small lead balls is held suspended by a thin tungsten thread. So when the larger balls are brought near to the smaller balls, the tungsten thread oscillates about its equilibrium position due to the restoring moment of rotation generated in the thread. The measurements can be monitored on a computer.

### Coupled Pendulum Oscillations

• Data logging interface.
• Easy setup.
• Multipurpose motion detector
• Graphical analysis.
• Coupled pendulum.
• Uncoupled pendulum.
• Phase difference.
• Beat.
• Coupling factor.
• Coupling length.
• Spring constant.
• Physical pendulum.
• Variable mass pendulum.

### Experiments with Rotary Motion Sensor and Vernier Data Logger

ROTATIONAL DYNAMICS
Objectives:

• Collect angular acceleration data for objects subjected to a torque.
• Determine an expression for the torque applied to a rotating system.
• Determine the relationship between torque and angular acceleration.
• Relate the slope of a linearized graph to system parameters.
• Make and test predictions of the effect of changes in system parameters on the constant of proportionality.

CONSERVATION OF ANGULAR MOMENTUM
Objectives:

• Collect angle vs. time and angular velocity vs. time data for rotating systems.
• Analyze the θ-t and ω-t graphs both before and after changes in the moment of inertia.
• Determine the effect of changes in the moment of inertia on the angular momentum of the system.

### Forced Oscillators & Resonance

• System can be driven at various frequencies.
• Bright LED display of frequency.
• Easy to measure Amplitude.
• Mass on the spring oscillates free or damped in water.

### FREE FALL APPARATUS

• Hand-held digital timer with data logging facility & membrane keypad.
• Small slits on the inside edge of the photogate for emitting & receiving infra red beam.
• Many other experiments can also be performed with the same timer.
• Quick & accurate results.
• "g" by free fall.
• Simple pendulum.
• Photogate.
• Digital timer.
• Solenoid.
• Picket fence.

### Gravitational Balance

Principle and Working:
This instrument allows measuring G with a high precision (with a maximum error of 15%). In the initial displacement method, G is derived from the angular acceleration of the balance due to movement of the attracting masses from one side to the other. The equilibrium displacement method derives G from the change in the equilibrium position of the balance at rest due to the change in position of the large masses. The built-in oil damping system reduces the time needed for equilibrium.

### Linear Air Track with Data Logging

• Accessories simply plug into the ends of vehicle.
• The magnet on buffers are identically polarised so they will repel producing elastic collisions between two vehicles.
• Interrupter cards. These are for interrupting light gates for timing applications.
• Facilitates the study of mechanics.
• Linear motion under frictionless condition.
• Precise and accurate data.
• Computer connectivity.
• Linear motion.
• Newton law of motion.
• Elastic collision.
• Inelastic collision.
• Conservation of momentum.
• Conservation of energy.
• Mass ratio.

### Linear Air Track with Digital Timer

• Accessories simply plug into the ends & top of vehicle.
• Facilitates the study of mechanics.
• Linear motion under frictionless condition.
• Multipurpose hand-held digital timer with data storage facility.
• Precise and accurate data.
• Many other experiments can also be performed with the same timer.
• Linear motion.
• Newton law of motion.
• Elastic collision.
• Inelastic collision.
• Conservation of momentum.
• Conservation of energy.
• Mass ratio.

### Projectile Motion Experiment

• It is easy to fixed on the table.
• Two fixed photogates to measure the speed.
• Fexible Launch Positions at the different spring load.
• Angle can be adjusted easily.
• Spring Mechanism.
• Range of a ball.
• Projectile Range Versus Angle.
• Projectile Path.
• Conservation of energy.
• Initial Velocity of the Ball.

### Surface Tension

• Modular approach.
• Data-logging interface.
• Precision dynamometer.
• Aluminum ring.
• Force sensor.
• Surface tension.
• Ring pull out method.
• force sensor
• data-logging
• Tensile force.
• Limiting force.

### Timing Ball

• No setup time.
• Very accurate and economical ball.
• Very easy to use to measure value of ‘g’.
• In-built two axis impact detection mechanism.
• Start/Stop/Mode switch (act as start, stop function in stopwatch & to display time and height under free fall after impact).
• Auto shutdown after 30sec.
• Auto ranging display.
• Fun experiments.

### Timing Car

• Noise free and easy setup replaces the conventional air track and photogate timer for linear motion studies.
• Novel tool for Comprehensive study of motion experiments as individual car motion is recorded in the inbuilt data logging electronics at every 2mm movement with microsecond timing resolution.
• Recording of time-distance data covering more than 5 meters of car movement.
• Unrestricted movement of car and data recording on any track - horizontal, up-down, curved tracks which is not possible with any other tool in the Industry.
• Remote for time synchronization of two cars for collision experiments.
• Software on computer to analyze the recorded time motion data.

### VARIABLE 'g' PENDULUM

• Hand-held digital timer with data logging facility & membrane keypad.
• Small slits on the inside edge of the photogate for emitting & receiving infra red beam.
• Many other experiments can also be performed with the same timer.
• Quick & accurate results.
• Oscillation period.
• Harmonic oscillation.
• Mathematical pendulum.
• Physical pendulum.
• Decomposition of force.
• Moment of inertia.

### Vernier Projectile Launcher VPL

• An easy-to-use dial.
• A turn knob allows you to control the desired range.
• A unique pneumatic launching system.
• Precise determination of the ball’s launch speed.