ROTATIONAL MOTION

What is the moment of inertia of a cube about an axis through its center and perpendicular to one face?

• (1/12)ML²
• (1/6)ML² for side L
• (1/3)ML²
• ML²

For a given body, how does the radius of gyration change if the axis of rotation is moved farther from the center of mass?

• It decreases
• It remains the same
• It increases
• It becomes negative

What is the moment of inertia of a cone about its central axis?

• ½ MR²
• (3/10)MR² for solid cone
• MR²
• ¼ MR²

How does the moment of inertia of a door compare when hinged at the edge versus the center?

• It is smaller when hinged at the edge
• It is greater when hinged at the edge
• It is the same
• It becomes zero at center

What is the radius of gyration used for in molecular physics?

• To measure electrical charge
• To characterize the size and shape of molecules in solution
• To calculate bond energy
• To determine melting point