A man exerts a force of $200 N$ in pulling a cart at a constant speed of $16 m s^{- 1}$ . Power spent by the man is:

3200 W

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1600 W

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800 W

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none of these

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Solution

The correct option is A $3200 W$
Force $= 200 N$ , velocity $= 16 m s^{- 1}$
Power $=$ force $\times$ velocity $= 200 N \times 16 m s^{- 1} = 3200 W$

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Similar questions

Rajan exerts a force of 150 N in pulling a cart at a constant speed of 10 m $s^{- 1}$ .Calculate the power exerted.

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