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A body spins about a fixed axis. If its angular velocity and angular momentum both are doubled, its kinetic energy

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detailed solution

Correct option is A

K=12Iω2=12Iωω=12Lω∴ K1=12L1.ω1=122L2ω=4K∴ K1−KK×100%=4K−KK×100%=300%

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