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A flywheel rotating about an axis throu...

A flywheel rotating about an axis through its centre and peropendicular to its plane loses ` 10pi^(2) ` J of energy on slowing donw from 60 rpm to 30 rpm. Find its moment of inertia about the given axis and the change in its angular momentum.

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The correct Answer is:
`20/3 kg. m^(2) ., (20 pi)/3 kg.m^(2)//s`
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