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7.2 Power

Chapter 7: Work ( Ewen et al. 2005 ). 7.2 Power. Objectives: Define power and solve power problems. Power . Power is the rate of doing work; how fast work is done. Units for work? 1 Watt (W) = 1 J/s ft lb/s 1 horsepower (hp) = 550 ft lb/s = 33 000 ft lb/mi. Example 1.

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