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The kinetic energy of an object rotating about a fixed axis with angular momentum L = I $ω$ can be written as

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K=L22I

K=2L2I

K=L2I

K=2L2I

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detailed solution

Correct option is A

K=12Iω2,L=Iω⇒ω=LIK=12I.LI2=L22I

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The kinetic energy of an object rotating about a fixed axis with angular momentum L = Iω can be written as

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The kinetic energy of an object rotating about a fixed axis with angular momentum L = I $ω$ can be written as