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A man spinning in free space change the ...

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

A

he will to expend some energy to increase I

B

he will have to expend some energy to decrease I

C

he does not have to expend to expend any energy to change I

D

either (a) or (b) depending on the initial value of I

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The correct Answer is:
B
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AAKASH SERIES-SYSTEM OF PARTICLES AND ROTATIONAL MOTION-Exercise-I
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