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A diver in a swimming pool bends his head before diving, because it
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Correct option is A
On bending the head before diving in swimming pool, the moment of inertia of the diver decreases.Talk to our academic expert!
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A disc rotates freely with rotational kinetic energy E about a normal axis through centre. A ring having the same radius but double the mass of disc is now, gently placed on the disc. The new rotational kinetic energy of the system would be
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