# Classical Mechanics-Particle Dynamics (IFS (Forests Services) Physics (Mains)): Questions 1 - 3 of 3

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## Question number: 1

» Classical Mechanics » Particle Dynamics » Conservation of Linear and Angular Momentum

Appeared in Year: 2011

### Write in Short

A particle of rest mass ‘M’ moving at a velocity ‘u’ collides with a stationary particle of rest mass ‘m’. If the particle stick together, show that the speed of the composite ball is equal to,

Where (Paper-1) (Section –A)

## Question number: 2

» Classical Mechanics » Particle Dynamics » Rotating Frames

Appeared in Year: 2013

### Write in Short

A satellite revolves in a circular orbit around the Earth at a certain height above it. Calculate the time period of revolution of the satellite, if the radius of the Earth is significantly higher than the height at which the satellite revolves. (Section A)

## Question number: 3

» Classical Mechanics » Particle Dynamics » Conservation of Linear and Angular Momentum

Appeared in Year: 2010

Essay Question▾

### Describe in Detail

Establish the relation between the angular momentum and torque of a particle. Show that this relation leads one to the principle of conservation of angular momentum. (Section A)

### Explanation

• Angular momentum is a measure of body is given by the cross product of linear momentum and position vector from the axis of rotation.

Where, is distance from the axis of rotation and the is the linear momentum of the body.

• Torque is defined as a moment

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