ROTATIONAL MOTION

What is the role of external torque in changing angular momentum along the axis?

• It changes perpendicular component
• It stops rotation
• It balances gravity
• It changes the axial component of angular momentum

In acrobatic performances, how is angular momentum conserved?

• By pushing air
• By changing mass
• By applying external torque
• By adjusting body posture to change moment of inertia

Which equation is derived from the work-kinetic energy route in rotational motion?

• F = ma
• P = Fv
• τ = Iω
• τ = Iα

What causes the change in angular speed in the chair experiment?

• Change in torque
• Change in gravity
• Change in friction
• Change in moment of inertia

When is τ = Iα applicable?

• When ω is constant
• When α is zero
• When torque is zero
• When moment of inertia is constant