ROTATIONAL MOTION

If ΣFi = 0, what can be said about the center of mass motion?

• It accelerates
• It moves in circle
• It moves with constant velocity or remains at rest
• It stops immediately

What is the primary effect of total torque on a rigid body?

• Changes linear momentum
• Changes position
• Changes angular momentum
• Changes mass distribution

What is the primary effect of total force on a rigid body?

• Changes angular momentum
• Changes only speed
• Changes linear momentum
• Changes direction only

What is the role of external forces in changing rotational state?

• They only change linear motion
• They cannot affect rotation
• They may produce torque that changes angular momentum
• They reduce moment of inertia

How does the line of direction of velocity affect angular momentum conservation?

• It changes mass
• It alters time
• It keeps OM = r sinθ constant
• It increases energy