A boy suddenly comes and sits on the circular rotating table. What will remain conserved?
Correct answer: A. Angular Momentum
- A. Angular Momentum
- B. Linear momentum
- C. kinetic energy
- D. none of these
Explanation
Angular momentum is conserved when there is no external torque acting on the system. When the boy sits on the rotating table, the moment of inertia changes, but if no external torque is applied, angular momentum remains conserved.
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About Angular and Linear Quantities
Rotational motion relates angular displacement, angular velocity and angular acceleration to linear displacement, tangential velocity and tangential acceleration through the radius. Questions use radians, v equals r omega and tangential acceleration, while distinguishing tangential velocity from centripetal acceleration and angular quantities from their linear counterparts.
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