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i) work= force x distance
= 2000 x 10 x 3
= 60000 J
ii) Power = $\frac{work \, done}{time}$
$\frac{60000}{6}$ = 1000w
iii) Efficiency = $\frac{10000}{12500}$ x 100
= 80%
johnmulu answered the question on February 14, 2017 at 12:41
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