ROTATIONAL MOTION Quiz

• Internal forces are too small
• Internal torques are random
• They are not calculated
• Because internal forces act in pairs along the line joining particles

• It must be at the center of mass
• It has no role
• It eliminates internal forces
• It serves as the reference point for position vectors

• It always increases
• It remains constant
• It becomes zero
• It may decrease or increase depending on work done, but angular momentum is conserved

• It gradually vanishes
• It doubles
• It reverses direction
• It stays constant

• Conservation of mechanical energy
• Newton's first law
• Law of inertia
• Conservation of angular momentum