A horse exert a pull of 300 N on a cart so that horse cart system moves with a uniform speed of 18 km per hr on a level road . Calculate the developed by the power in watt

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Solution

$f o r c e = 300 N v e l o c i t y = 18 k m / h = 5 m / s p o w e r = f o r c e \times v e l o c i t y = 300 \times 5 = 1500 W a t t$

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