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AIIMS2002PhysicsRotational Motion

The angular momentum of a moving body remains constant if

Options

  1. Anet external force is applied
  2. Bnet external torque is applied
  3. Cnet pressure is applied
  4. Dnet external torque is not applied.

Correct answer

D. net external torque is not applied.

Step-by-step solution

When the net external torque acting on a system is zero, the total angular momentum of the system remains constant. Therefore the angular momentum of a moving body remains constant if net external torque is not applied.

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