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Matter In Our Surroundings

Question
CBSEENSC9006394
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A horse exerts a pull on a cart of 300 N so that the horse-cart system moves with a uniform speed 18 km/h on a level road. Calculate the power developed by the horse in watt and also find its equivalent in horsepower.

Solution
Force exerted on the cart, F = 300 N

Speed with which the horse-cart system is moving = 18 km/hr = 18×10003600 = 5 m/s 

Power developed by the horse, P = Work donetime 

                                           Fst= Fv        = 300 ×5       = 1500 W

Power in terms of horsepower = 1500746=2.01 H.P 

Some More Questions From Matter In Our Surroundings Chapter

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