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% eff = (Wout / W in) *100 eff = (80 J / 100 J) * 100 = 80% W in = 75 N * 5 m = 375 J W out = 100 N * 3 m = 300 J eff = (300 J / 375 J) *100 = 80% W in = 60 N * 1 m = 60 J W out = 200 N * 0.2 m = 40 J eff = (40 J / 60 J) *100 = 67%
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% eff = (Wout / W in) *100 W in = 25 N * 10 m = 250 J W out = 60 N * 3 m = 180 J eff = (180 J / 250 J) *100 = 72% W in = 75 N * 2 m = 150 J W out = 50 N * 2.5 m = 125 J eff = (125 J / 150 J) *100 = 83% W out = (eff * W in ) / 100 = (40 * 200 J) / 100 = 80 J
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