A machine raises a load of 750 N through a height of 16 m in 5 s. calculate: (i) energy spent by machine,
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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(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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