ROTATIONAL MOTION

What determines whether a body undergoes translation or rotation?

• The color of the body
• The temperature
• The net force and net torque acting on it
• The time of day

Which example best illustrates a couple in everyday life?

• Pushing a box on the floor
• Lifting a book
• Sliding a drawer
• Turning the lid of a bottle with fingers

Can a body be in rotational equilibrium even if forces are unbalanced?

• No, unbalanced forces always cause rotation
• Yes, if the net torque is zero
• Only in space
• Only for symmetric bodies

What is the condition for a rigid body to be in complete mechanical equilibrium?

• Only net force zero
• Only net torque zero
• Sum of forces and sum of torques both zero
• Velocity must be zero

What is the net force on a rod when two equal and parallel forces act in the same direction at its ends?

• Zero
• F
• 2F
• F/2