ROTATIONAL MOTION

Where is the center of mass of two particles of equal mass located?

• Closer to the first particle
• At the midpoint of the line joining them
• At the position of one particle
• Nowhere

If a particle moves with constant velocity in a straight line, is its angular momentum about a fixed point constant?

• No
• Only if the point is the origin
• Yes
• Only if the velocity is zero

What is the purpose of the right-hand rule in determining angular momentum?

• To calculate its magnitude
• To measure the speed
• To find the direction of the angular momentum vector
• To determine the energy

Can a particle moving in a straight line have angular momentum?

• No
• Only if it is rotating
• Yes, about a point not on its line of motion
• Only in a gravitational field

How does increasing the distance from the axis of rotation affect the angular momentum of a particle?

• It decreases
• It increases
• It has no effect
• It depends on the direction