ROTATIONAL MOTION

What is the direction of precession relative to the torque and angular momentum vectors?

• Same as torque
• Opposite to angular momentum
• Along the rim's plane
• Perpendicular to both torque and angular momentum

How does the distribution of mass affect the torque required to change angular momentum?

• It reduces torque needed
• It makes torque independent of force
• It only affects weight
• More spread-out mass increases moment of inertia, requiring more torque for the same angular acceleration

What is the effect of doubling the angular speed on the angular momentum of a rotating rim?

• It halves angular momentum
• It has no effect
• It quadruples it
• It doubles the angular momentum

How does the angular momentum of a particle moving in a straight line vary with respect to a point not on its path?

• It increases continuously
• It decreases to zero
• It oscillates
• It remains constant if no external torque acts

What is the significance of the pivot point in rotational dynamics?

• It reduces mass
• It measures speed
• It generates energy
• It defines the reference point for calculating torque and angular momentum