ROTATIONAL MOTION Quiz

• No effect
• Longer rod decreases torque
• Longer rod results in greater torque for the same force
• Torque becomes zero

• It moves linearly
• It remains stationary
• It vibrates rapidly
• It undergoes pure rotation about the pivot

• Because it attracts the entire needle
• Because it charges the needle
• Because it increases the needle's mass
• Because it applies a torque through a couple until the needle is aligned

• The net force increases
• The torque doubles
• The rotation becomes faster
• The net torque becomes zero

• It determines the mass
• It affects only translational motion
• It changes the length of the rod
• It determines whether torques add up or cancel