14. A boy of mass 40 kg is climbing a vertical pole at a constant speed. If the coefficient of friction between his palms and the pole is 0.8 andg 10 m/s" , the horizontal force that he is applying on the pole is(a)300N b) 400 N (d) 600 N (c) 500 N

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A boy of mass 40 kg is climbing a vertical pole at a constant speed. If the coefficient of friction between his palms and the pole is 0.8 and $g = 10 m s^{- 2}$ , the horizontal force that he is applying on the pole is

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m s^{- 2}

, the horizontal force that he is applying on the pole is:

Q. A boy of mass

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kg is climbing a vertical pole at a constant speed if the coefficient of friction between his palms and the pole is

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