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Muscle Power

If walking up a 10m flight of steps takes 12s a person weighing 480N will have leg muscle power of (480 × 10) ÷ 12 watts.This is 400 watts with 200 watts in each leg.The leg muscle power is equal to the gain in gravitational potential energy ÷ time.

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Specification: AQA Physics (7407), AS-level, 3.4.1.7 Work, energy and power. Topic: Work, Energy and Power.

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