ROTATIONAL MOTION

Can angular momentum be conserved even if the body is deforming?

• No, only rigid bodies
• Yes, only if mass is constant
• Yes, if no external torque acts
• No, deformation always causes loss

How does angular momentum conservation apply to planets?

• They lose angular momentum
• They require constant torque
• In absence of external torque, L is constant
• They rotate due to internal torque

What does the cross product r × F represent?

• Work
• Power
• Linear momentum
• Torque

When is angular momentum not conserved?

• When velocity is constant
• When motion is linear
• When net external torque is non-zero
• When mass is uniform

What is the significance of the origin in angular momentum calculation?

• It must be at center of mass
• It has no significance
• Angular momentum is defined with respect to a point
• It must be stationary