ROTATIONAL MOTION

Why does a rolling cylinder exhibit rotational motion?

• Because it vibrates internally
• Because it changes mass
• Because it rotates about its central axis while moving forward
• Because air pushes it

What happens to the orientation of a line segment OP during pure translation?

• It increases continuously
• It fluctuates randomly
• It decreases gradually
• It remains constant

In combined translational and rotational motion, how do the velocities of different particles compare?

• All are zero
• All are equal
• They are different
• They cancel out

What defines pure translational motion in a rigid body?

• Particles rotate about the center
• Velocities vary across the body
• All particles have the same velocity at any instant
• The body changes shape

How is the motion of a rigid body described when it is not pivoted or fixed?

• Only rotation
• Only vibration
• Either pure translation or combination of translation and rotation
• Random oscillation