A boy of mass 50 kg is climbing a vertical pole at a constant speed. If coefficient of fricition between his palms and the pole is 0.75, then the normal reaction between him and the pole is `("take "=10m//s^(2))`

A boy of mass 50 kg is climbing a vertical pole at a constant speed. If coefficient of fricition between his palms and the pole is 0.75, then the normal reaction between him and the pole is ("take g "=10m//s^(2))

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=10m//s^2 , the horizontal force that he is applying on the pole is

A boy of mass 40kg 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=10m/s^(2) ,the horizontal force that he is applying on the pole is?

A lineman of mass 60 kg is holding a vertical pole . The coefficient of the static friction between his hands and the pole is 0.5 . If he is able to climb up the pole , what is the minimum force with which he should press the pole with his hands ? ( g = 10 m//s^(2) )