Chapter 4: Rotational Motion & Gravitation (Set-1)

Torque is defined as:

SI unit of torque is:

Angular momentum of a particle is given by:

Angular momentum is conserved when:

If torque is zero, angular momentum:

Direction of torque is given by:

A door is easiest to open when force is applied:

Torque becomes zero when:

Rotational analogue of force is:

Angular impulse equals change in:

Moment of inertia depends on:

SI unit of moment of inertia is:

Which has greatest moment of inertia about central axis?

Moment of inertia of a rod about its centre is proportional to:

Doubling the distance of mass from axis increases MoI by:

Rotational inertia is greatest when:

Parallel axis theorem adds:

The rotational kinetic energy is:

Moment of inertia of point mass is:

Least moment of inertia is for:

Rotational analogue of Newton’s second law:

Angular acceleration is produced by:

Rolling without slipping means:

If torque increases, angular acceleration:

Work done in rotational motion =

Power in rotational motion is:

In pure rolling, friction:

Angular velocity is measured in:

A body with larger MoI will:

Rotational equilibrium occurs when:

A central force:

Central forces always conserve:

Non-central force causes:

Gravitational force is a:

Central forces result in motion:

Non-central forces change:

Gravitational force follows:

If distance becomes double, gravitational force becomes:

Universal gravitational constant G depends on:

SI unit of G is:

Weight of body is highest at:

Value of g decreases with:

Escape velocity from Earth depends on:

Orbital velocity is:

Value of acceleration due to gravity at Earth’s centre is:

Gravitational potential energy is:

Satellite in circular orbit has:

Binding energy of satellite is:

For planets, period of revolution obeys:

Gravitational force between two bodies becomes zero when: