PhysicsA man spinning in free space change the moment of inertia of his body (I) by changing its shape. In this process

A man spinning in free space change the moment of inertia of his body (I) by changing its shape. In this process

  1. A

    He will have to expand some energy to increase I

  2. B

    He will have to expand some energy to decrease I

  3. C

    He does not have to expend any energy to change I

  4. D

    Either (A) or (B) depending on the initial value of I

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    Solution:

    If a man spinning in free space want to change his M.I of his body he has to expend some energy to decrease or increase I depending the initial value of I

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