ROTATIONAL MOTION

How does reversing one force on a rod affect its motion?

• It stops all motion
• It causes vibration
• It changes the mass of the rod
• It changes the system from translational imbalance to rotational imbalance

What is the significance of the midpoint in torque calculations for a symmetric rod?

• It has no significance
• It increases the force
• It serves as a convenient point for calculating net torque due to symmetry
• It stops rotation

What is the net torque on a rod when two equal and opposite forces act perpendicularly at its ends in antiparallel fashion?

• Zero
• aF
• 2aF
• F/a

Why can't a particle be in rotational equilibrium in the usual sense?

• Because it moves too fast
• Because it has infinite mass
• Because it is always accelerating
• Because it has no dimensions and thus cannot rotate about an axis

What type of equilibrium does a particle satisfy for mechanical equilibrium?

• Rotational equilibrium only
• Both translational and rotational equilibrium
• Dynamic equilibrium only
• Translational equilibrium only