ROTATIONAL MOTION

How does the kinetic energy expression separate for a system of particles?

• K = K' + V
• K = K' + (1/2)MV²
• K = (1/2)MV² only
• K = K' + M²V

What is the significance of the center of mass in explosion dynamics?

• It stops suddenly
• It accelerates randomly
• It continues with the same velocity
• It disappears

What is the primary factor in determining torque effectiveness?

• Parallel component of force
• Mass of object
• Perpendicular component of force
• Color of the object

How is angular momentum conserved in a system?

• By increasing external torque
• By stopping all motion
• By redistribution among parts when no external torque acts
• By changing mass

What is the condition for zero gravitational torque on a body?

• When mass is zero
• When gravity is zero
• When supported at the center of gravity
• When angular velocity is zero