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NEET Physics Rotational Motion NEET PYQ-Rotational Motion

  • question_answer
    A disc is rotating with angular velocity \[\omega \]. If a child sits on it, what is conserved?[AIPMT 2002]

    A) Linear momentum                     

    B) Angular momentum

    C) Kinetic energy                

    D) Moment of inertia

    Correct Answer: B

    Solution :

    If no external torque is applied on the system then angular momentum of the system remains constant. When a child sits on rotating disc, then no torque is applied (weight of child acts downward), so angular momentum will remain conserved.


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