RAJASTHAN PMT Rajasthan - PMT Solved Paper-2000

  • question_answer
    A person is standing on a moving platform spreading his arms. He suddenly contracts his  rms, his:

    A)  angular momentum will increase.

    B)  moment of inertia will increase.

    C)  moment of inertia will decrease.

    D)  angular momentum remains same.

    Correct Answer: D

    Solution :

    Angular momentum\[J=I\omega .\] On stretching the arm, their is no effect on \[I\] and \[\omega ,\] therefore, angular momentum remains same.


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