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A machine raises a load of 750 N through a height of 16 m in 5 s. calculate:(i) energy spent by machine,(ii) power at which the machine works. |
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Answer» (i) Energy spent by machine or work done = F S Work, W = 750 × 16 = 12000J (ii) Power spent = work done/time taken = 12000J/5s = 2400W |
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