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Explain the law of conservation of angul...

Explain the law of conservation of angular momentum in the case of
acrobat performing somersault.

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An acrobat: In the coiled position of the body, the moment of inertia decreases and this helps the acrobat perform 2 or 3 somesaults before gravity takes over. In the stretched position moment of inertia increases and almost the turning effect becomes zero.
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SUBHASH PUBLICATION-SYSTEMS OF PARTICLES AND ROTATIONAL MOTION-THREE MARKS QUESTION WITH ANSWERS
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  8. Write the general conditions for equilibrium of a rigid body .

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  14. What are the properties of a couple acting on a body ?

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  15. State and explain the law of moments.

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  16. State the conditions of equilibrium of a system of coplanar forces.

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