50kJ of energy causes a displacement of 25m in a body in the direction of force in 2.5s. Find the power in a unit of horse power.

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Solution

Power= work done/time
= 50kJ /(2.5s)
= (50×1000) / 2.5
=2× 10^4 watt

1horse power=746watt

So, power value in horse power = (2×10^4) /(746)
= 26.8 HP

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