ROTATIONAL MOTION

In rotational kinematics, what corresponds to velocity in linear motion?

• Angular acceleration
• Torque
• Force
• Angular velocity

Why is rotational motion about a fixed axis considered analogous to linear motion?

• It always occurs in a straight line
• Rotation and translation are unrelated
• It involves only one independent variable
• It uses the same units

How does the moment of inertia of a disc compare when rotating about a diameter versus about an axis perpendicular to its plane?

• It is the same
• It is double
• It is half about the diameter
• It is four times

Which object has the same moment of inertia as a thin circular ring about its central perpendicular axis?

• Solid sphere
• Solid cylinder
• Circular disc
• Hollow cylinder

Which of the following bodies has the highest moment of inertia for the same mass and radius when rotating about its central axis?

• Solid sphere
• Solid cylinder
• Circular disc
• Hollow cylinder