ROTATIONAL MOTION

What is the effect of increasing the radius on the linear velocity of a point on a rotating body?

• It decreases velocity
• It has no effect
• It stops rotation
• It increases the linear velocity

What is the motion of the center of mass of a rolling cylinder?

• It remains stationary
• It rotates in place
• It moves with translational velocity v
• It moves with zero velocity

What is the state of the point of contact of a cylinder rolling without slipping?

• It moves faster than the center
• It moves backward
• It is instantaneously at rest
• It moves upward

What distinguishes rotational motion from translational motion in a rigid body?

• Rotation is slower
• Translation involves force
• In rotation, different particles have different linear velocities
• Rotation is only for circular objects

In rotational motion about a fixed axis, what is common for all particles of the rigid body?

• They all have the same linear speed
• They all move in straight lines
• They all have the same angular displacement in a given time
• They are all at rest