Chapter 4: Rotational Motion & Gravitation (Set-2)

Angular momentum of a rigid body rotating with angular velocity ω is:

Torque is maximum when angle between force and lever arm is:

Precession of spinning tops occurs due to:

If angular momentum increases, torque must be:

Angular momentum of a planet around Sun is conserved because:

Units of angular momentum:

When a ballet dancer folds arms inward, rotation:

Angular momentum is a:

A rigid body rotates faster when:

A rolling ball has:

MoI of a rod about one end is:

For same mass, which shape has smallest MoI?

MoI depends on:

A thin rod spins faster when rotated about:

The rotational kinetic energy formula uses:

Radius of gyration is defined as:

If all mass is concentrated at axis, MoI =

Greater MoI means body:

Using parallel axis theorem helps compute MoI about:

MoI of uniform disc about its diameter is:

A body in rotational equilibrium has:

Angular acceleration is proportional to:

If MoI increases while torque constant, angular acceleration:

A wheel speeds up when:

Rotational work done is:

Rotational power is:

A disc and ring roll down incline. Which reaches first?

In rolling motion, point of contact has:

Angular velocity is related to linear velocity by:

A torque always produces:

In central force motion, torque about centre is:

Non-central forces cause:

Planetary motion is planar because:

A central force depends only on:

Non-central force example:

Gravitational force varies as:

If distance increases by 3 times, gravity becomes:

Formula for gravitational force:

G is a:

Value of G experimentally found by:

Weight of object on Moon is:

A satellite stays in orbit due to:

Escape velocity varies with:

Gravitational potential energy is maximum at:

Value of g at centre of Earth is:

Orbital speed is independent of:

Total energy of satellite in orbit is:

Kepler’s second law states:

Gravitational force is always:

Work done by gravity in lifting object is: