what is the minimum rotational inertia of the flywheel?

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Physics
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Question description

A flywheel for a single piston engine rotates at an average speed of 1500 RPM. During half a rotation the flywheel has to absorb 1000 J of energy. If the maximum permissible speed fluctuation is ± 60 RPM, what is the minimum rotational inertia of the flywheel? Assume there is no friction. Please discuss how you arrived at your answer.

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(Top Tutor) Daniel C.
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