Physics
A machine raises a load of 750N through a height of 16m in 5s. Calculate:
(i) the energy spent by the machine.
(ii) the power of the machine if it is 100% efficient.
Work, Energy & Power
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Answer
Given,
Force = 750N
height or distance moved = 16 m
time = 5 s
(i) Energy spent or the work done = F x S
Therefore, energy spent is equal to 12000 J
(ii)
Therefore, power spent is equal to 2400 W.
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