Categories > rotational-motion > kinetic energy > A flywheel has moment of inertia $4kg-{{m}^{2}}$ and has kinetic energy of 200 J. Calculate the number of revolutions it makes before coming to rest if a constant opposing couple of $5N-m$ is applied to the flywheel

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Question: A flywheel has moment of inertia $4kg-{{m}^{2}}$ and has kinetic energy of 200 J. Calculate the number of revolutions it makes before coming to rest if a constant opposing couple of $5N-m$ is applied to the flywheel


1) 12.8 rev
2) 24 rev
3) 6.4 rev
4) 16 rev
Solution: Explanation: No Explanation
kinetic energy work and power

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