#### Question

A 1200-kg flywheel with a radius of gyration of 400 mm has its speed reduced from 5000 to 3000 rev/min during a 2-min interval. Calculate the average power supplied by the flywheel. Express your answer both in kilowatts and in horsepower.

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#### Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

4th EditionRandall D. Knight
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