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

Angular momentum of a rotating rigid body depends on:

A larger lever arm produces:

Angular momentum is conserved when:

Unit of torque is same as unit of:

A rod pivoted at one end is easier to rotate if force applied:

Doubling angular velocity doubles:

Angular momentum direction is:

Gyroscopic effect stabilizes:

A torque always changes:

If angular momentum is constant and MoI increases, ω:

MoI of uniform disc about central axis:

For ring rolling, total KE =

Hollow sphere has higher MoI than solid sphere because:

Least MoI for a rod is about:

The quantity kg·m² measures:

Parallel axis theorem adds term:

MoI determines body’s:

Rotational KE does not depend on:

Radius of gyration k represents:

MoI of thin rod about end is:

Rotational work =

Rotational power =

Pure rolling occurs when:

In rolling motion, velocity at top of wheel =

Net torque on a body is zero; then:

Rotational kinetic energy increases if:

A wheel slows down due to:

Angular displacement measured in:

Rotational inertia increases when:

A body in rotational equilibrium has:

Central forces always point toward:

A central force produces:

Non-central forces change:

Motion under central force lies in:

Gravitational force is:

If distance halves, gravitational force becomes:

Value of G is:

Inverse square law applies to:

Gravitational force reduces with height because:

Unit of gravitational constant G:

g is minimum at:

A body weighs less at equator because:

Orbital speed depends on:

Escape velocity independent of:

A satellite in free fall feels:

Gravitational potential energy (−GMm/r) is:

Kepler’s 3rd law states:

Total energy of orbiting satellite =

Gravitational force between two bodies is zero at:

Earth revolves around Sun because: