ROTATIONAL MOTION

What happens to the moment of inertia if the radius of a disc is doubled?

• It doubles
• It quadruples
• It increases by a factor of four
• It remains unchanged

How does the length of a rod affect its moment of inertia about the center?

• It is independent of length
• It increases linearly
• It increases with square of length
• It decreases with length

What plays the role of mass in rotational motion?

• Angular momentum
• Torque
• Force
• Moment of inertia

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

• Angular velocity
• Angular acceleration
• Torque
• Angular displacement

What is the significance of restricting rotational motion to a fixed axis?

• It increases complexity
• It allows three-dimensional motion
• It reduces the system to one degree of freedom
• It eliminates angular acceleration