Chapter 4: Rotational Motion & Gravitation (Set-3)

Torque depends on:

Angular momentum of a system changes when:

A bicycle wheel maintains direction due to:

A figure skater spins faster by:

Angular momentum depends on:

If torque is doubled and MoI constant, angular acceleration:

Angular momentum of Earth around Sun is conserved because:

Gyroscope resists tilting because of:

Torque is zero if:

Units of angular impulse:

MoI increases when:

A thin hoop has MoI =

The property resisting change in rotational motion is:

MoI of a solid sphere about an axis through centre:

Which body accelerates fastest down incline?

Radius of gyration decreases when:

Rotational KE does NOT depend on:

For same mass, MoI is smallest for:

Parallel axis theorem applies when axis is:

Perpendicular axis theorem:

Rotational Newton’s law:

Unit of angular acceleration:

Rotational equilibrium requires:

Disc and ring rolled same incline; disc reaches earlier because:

For pure rolling, acceleration relation:

If torque constant & MoI decreases, α:

Angular displacement measured in:

A wheel rotating with constant ω has:

Rolling object’s KE includes:

Angular momentum conserved in:

Central forces produce:

In central force field, path is always:

Non-central forces produce:

Central force direction:

Gravity is a:

Coulomb & gravitational force both follow:

F ∝ 1/r² implies:

If r → 0, gravitational force becomes:

G is dimensionally:

The law F ∝ 1/r² suggests:

g decreases with:

At infinite height, gravitational potential =

Orbital velocity at height h:

Escape velocity from Earth:

g is maximum at:

Total energy of satellite in circular orbit =

Work done by gravity during free fall:

A geostationary satellite stays above same point because:

Gravitational force between two objects depends on:

Astronauts feel weightless because: