College Physics Mechanics Lab

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Experiment:

• Exp- To determine the viscosity of glycerine.

Salient features:

• Solenoid for holding the ball.
• Transparent long glass tube.
• Strong heavy base.
• Digital timer.

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Experiments:

• Exp-1 Study the characteristic frequencies of the uncoupled pendulum.
• Exp-2 To determine the coupling factors for various coupling lengths, the angular frequencies or "in-phase" and "in opposite phase" vibration, and the angular frequencies ofthe beat mode.
• Exp-3 To study the linear relation between the square of the coupling lengths, beat mode, and the square of the frequency for "in-opposite phase" vibration.
• Exp-4 To determine the spring constant of the coupling spring.

Salient features:

• Data logging interface.
• Easy setup.
• Multipurpose motion detector
• Graphical analysis.

Two equal length pendulums with same mass have a particular characteristic frequency are coupled by a spiral spring. The amplitudes of both pendulums are recorded as a function of time for various vibrational modes and different coupling factors using a motion detector.
The setup can be used to study “in-phase”, “in-opposite phase”, and “beat” mode.

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Learning Objectives/experiments< To determine the range of projectile as a function of the angleof inclination.< To determine the (maximum) range as a function of the initialvelocity.
Scope of delivery4 1 Projectile Launcher with Bench Clamp4 1 Digital Timer with Adaptor4 1 Pair of Photogates with Cable4 1 Photogate clamp4 2 Plastic BallsSPECIFICATIONS
Feature1. Continuously variable projection angle between 0° and 902. Variable Launch Speed: For short range or longer rangeexperiments.3. Flexible Launch Positions: Stable stand offers horizontal andvariable angle launching positions.4. Unique Piston Design: Minimizes projectile spin to ensurerepeatability of impact position.5. Pair of photogates for velocity measurement.


Key Topics4 Range of a ball.4 Projectile Range Versus Angle.4 Projectile Path.4 Conservation of energy.4 Initial Velocity of the Ball.

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Experiments:

• Exp-1 To determine the relation between centripetal force and angular velocity.
• Exp-2 To determine the relation between centripetal force and rotating mass.
• Exp-3 To determine the relation between centripetal force and radius of the circular movement.

Salient Features :

• Easy setup.
• Sturdy base.
• High precision dynamometer
• Multipurpose digital timer with photogate
• Power supply with short circuit protection.

Principle and Working:In this experiment a car is gradually loaded with the additional weights. The centrifugal force apparatus with a constant angular velocity is rotated with each given mass. The force occurring is determined with the help of a spring balance. The car is connected below the pulley to a spring balance by a thread and a decoupling hook. The spring balance is pushed down to the maximum possible position. Now a constant angular velocity is set to the motor, which remains constant during the entire course of the experiment. The force experienced by the measuring car without any additional weight is read. The position r of the red pointer is marked by a piece of adhesive tape.

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Experiments:

• Exp-1 To measure the force required under static conditions to displace the mass the same distance against the pull of the spring.
• Exp-2 To calculate the moment of inertia.

Salient Features :

• Easy setup.
• Computer connectivity.
• Labquest mini may be used in other experiments also.
• Sturdy base.

It consist of a having mass supported from a cross arm attached to a vertical shaft. The cross arm is counter balanced by having mass. An vertical rod can be adjusted on the base as a radius vector. A ball bearing pulley mounted on a rod on the base is used for measuring the force exerted by a spring with which mass is coupled to the shaft.
By knowing the mass, the speed of rotation and the radius, the centripetal force can be calculated. A photog

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Experiments:

• Exp-1 To determine Moment as a function of the distance between the origin of the coordinates and the point of action of the force.
• Exp-2 To determine Moment as a function of the angle between the force and the position vector to the point of action of the force.
• Exp-3 To determine Moment as a function of the force.

Salient Features:

• High precision dynamo meter.
• Modular approach.
• Strong and heavy base.
• Frictionless movement of disk.

Principle and Working:Coplanar forces (weight, spring balance) act on the moments disc on either side of the pivot. In equilibrium, the moments are determined as a function of the magnitude and direction of the forces and of the reference point.
The spring balance is adjusted to zero in the position in which the measurement is to be made in each case. The straight line from the push-in button to the pivot point is adjusted to the horizontal by moving the swivel clamp on the stand rod. The fishing line to weight pan then runs along a row of holes. The spring balance should be mounted in the swivel clamp so that it forms an angle Φ with the fishing line.

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Experiments:

• Exp-1 Determining of G, the fundamental universal gravitational Constant.
• Exp-2 Determining the time of oscillation of a freely swinging torsion pendulum.
• Exp-3 Determining the damping constant of oscillation of a freely swinging torsion pendulum.

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.

Product Details:

Experiments:

• Exp-1 Determining of G, the fundamental universal gravitational Constant.
• Exp-2 Verifying the inverse-square law.

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.