ROTATIONAL MOTION

What happens to rotational state if net torque is non-zero?

• Nothing happens
• It becomes stationary
• It changes angular momentum
• It conserves energy

What is the significance of the cross product in angular momentum definition?

• It makes it scalar
• It ensures direction is perpendicular to plane of motion
• It reduces magnitude
• It changes units

How does the conservation of angular momentum apply to a free particle?

• It loses angular momentum
• Its angular momentum about any fixed point remains constant
• It gains angular momentum
• It oscillates in angular momentum

What determines the magnitude of torque on a body?

• Mass and velocity
• Force and moment arm
• Time and distance
• Energy and power

What is the condition for no change in angular momentum?

• Maximum force
• Zero net torque
• High inertia
• Low speed