1 HP = 746 watt
1/4 HP = 746/4 = 186.5 W
Considering 50% efficiency output power = 93.25 W
⇒ 600 rpm = 600/60 = 10 rotations/second
Work per rotation = (93.25)(1/10) = 9.325 J
A body is suspended from a smooth horizontal nail by a string of length 0.25 met
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