ROTATIONAL MOTION

What is the angular momentum of a body with moment of inertia I and angular velocity ω?

• L = Iα
• L = τt
• L = Iω
• L = ½Iω²

A constant torque acts on a body starting from rest. How does angular velocity vary with time?

• Constant
• Increases linearly
• Increases quadratically
• Decreases

If angular velocity doubles, what happens to rotational kinetic energy?

• Doubles
• Becomes four times
• Halves
• Remains same

What is the condition for no change in rotational kinetic energy?

• No net work done
• Constant torque
• Increasing moment of inertia
• Zero angular velocity

Which law is analogous to Newton’s second law in rotational motion?

• F = dp/dt
• τ = Iα
• v = rω
• L = Iω