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A man standing on a turntable raises his...

A man standing on a turntable raises his hands suddenly. What happens ?

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By raising his hands, the moment of inertia of the system increases and hence the angular velocity `omega` decreases.
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MBD PUBLICATION-MOTION OF SYSTEM OF PARTICLES AND RIGID BODY-QUESTION BANK
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  11. Why the speed of whirlwind in a tornado is alarmingly high ?

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  12. What is the centre of mass of a body ?

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  13. Where the centre of mass of a rigid body lies ?

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  14. The Sl unit of centre of mass is ?

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  15. The concept of centre of mass is ?

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  16. Moment of inertia is a vector or scalar quantity ?

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  17. Where law of conservation of angular momentum is valid ?

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  18. What is basic cause of rotational motion ?

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  19. If axis of rotation not given, does moment of inertia bear a meaning ?

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  20. Angular momentum is directed according to which rule ?

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