A man of 120 pounds was made to stand against the inner wall of a hollow cylinder and the rotor of radius 10m is rotating at its vertical axis with a speed of , so what will the coefficient of friction between the wall and his clothing be?
0.25
0.35
0.45
0.15
As we know to calculate the minimum angular speed of the rotation
R = 10m
μ = ?
μ=0.25