A man of 130 pounds was made to stand against the inner wall of a hollow cylinder and the rotor of the unknown radius is rotating at its vertical axis with a speed of 2.5rads-1, and the coefficient of friction between the wall and his clothing be 0.31. So what will be the radius of the rotor?
5m
6m
11m
3m
As we know to calculate the minimum angular speed of the rotation
R = 5m