ROTATIONAL MOTION

What happens to the total angular momentum if external torque is absent?

• It increases
• It decreases
• It oscillates
• It remains constant

What is the vector result of CP × v for a rotating particle?

• Zero vector
• A vector parallel to the rotation axis
• A radial vector
• A tangential vector

What is the effect of increasing r⊥ on the linear speed of a rotating particle?

• Speed decreases
• No effect
• Linear speed increases proportionally
• Speed becomes zero

How does the velocity vector v relate to the circular path of a rotating particle?

• It is radial
• It is along the axis
• It is perpendicular to the plane
• It is tangential to the circular path at every point

What is the significance of the term OC in the angular momentum expression?

• Distance from particle to axis
• It represents the vector from origin to the center of the circular path
• Velocity of the center
• Radius of gyration