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

Question

Vikas TU · Answer

μ=0.8 Frictional force=μN₁ =mg/μ =400/0.8 =500N ….........................................................

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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

1 Answers

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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

1 Answers

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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