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In loading a truck, a man lifts boxes of 100 N each through a height of 1.5 m. (a) How much work does he do in lifting one box ? (b) How much energy is transferred when one box is lifted ? (c) If the man lifts 4 boxes per minute, at what power is he working ? (g = 10 m s−2) |
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Answer» In loading a truck, a man lifts boxes of 100 N each through a height of 1.5 m. (a) How much work does he do in lifting one box ? (b) How much energy is transferred when one box is lifted ? (c) If the man lifts 4 boxes per minute, at what power is he working ? (g = 10 m s−2) |
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