ROTATIONAL MOTION

What is the advantage of using center of mass in motion analysis?

• Makes it more complex
• No advantage
• Simplifies the motion into translation and rotation
• Only for symmetric bodies

Is the center of mass frame inertial if no external forces?

• No
• Only if accelerating
• Yes
• Only in space

What is the angular momentum of a system with zero net linear momentum?

• Always zero
• Can be non-zero
• Infinite
• Undefined

What is the center of mass of a system of two equal masses?

• Closer to one
• At the midpoint
• At one mass
• Nowhere

If a particle moves in a straight line, is its angular momentum constant?

• No
• Only if accelerating
• Yes, about a fixed point
• Only in vacuum