ROTATIONAL MOTION

What is the role of the string in the bicycle rim experiment after one is released?

• It provides additional torque
• It balances the angular momentum
• It stops air resistance
• It acts as the pivot point about which precession occurs

Which of the following best describes precession?

• Rapid spinning of the object
• Vibration of the axle
• Sudden stoppage of rotation
• The change in direction of the axis of rotation due to torque

What is the effect of a constant torque on angular momentum?

• It keeps angular momentum constant
• It makes angular momentum zero
• It reverses angular momentum periodically
• It causes angular momentum to change at a constant rate

When is the angular momentum of a particle zero?

• When the particle is at rest
• When the particle is far from origin
• When velocity is zero
• When position and momentum vectors are parallel

In the torque-angular momentum relation, what replaces linear momentum in rotational motion?

• Force
• Acceleration
• Torque
• Angular momentum