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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/s2 , the horizontal force that he is applying on the pole is (A) 300 N (B) 400 N (C) 500 N (D) 600 N

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/s2
, the horizontal force that he is applying on the pole is
(A) 300 N (B) 400 N (C) 500 N (D) 600 N

Grade:

1 Answers

Vikas TU
14149 Points
2 years ago
μ=0.8
Frictional force=μN₁
=mg/μ
=400/0.8
=500N
….........................................................

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