ROTATIONAL MOTION

Can a system have zero total external force but non-zero total external torque?

• No
• Yes
• Only in vacuum
• Only in space

What is required to prove that the rate of change of total angular momentum equals total external torque?

• Only Newton's Second Law
• Only Newton's Third Law
• Newton’s Second Law and Third Law with central forces
• Gravitational law only

On what laws is Newton's Second Law for finite-sized bodies based?

• Newton's First and Second Laws
• Newton's Second and Third Laws for particles
• Only Newton's Second Law
• Only Newton's Third Law

How can the kinetic energy of a system of particles be separated?

• Into potential and kinetic energy
• Into rotational and vibrational energy
• Into center of mass kinetic energy and kinetic energy relative to center of mass
• Into linear and angular components

What is the condition for the center of mass motion of a system of particles?

• Depends on internal forces only
• Depends only on external forces
• Depends on both internal and external forces
• Is always zero