A uniform rod has mass M and length 4L. It rests in equilibrium with one end on a rough horizontal surface at A. At point B, at a distance 3L from A, it is supported by a fixed smooth roller. The rod just remains in equilibrium when theta = 30^(@) (a) Find the normal force applied by the horizontal surface on the rod at point A. (b) Find the coefficient of friction between the rod and the surface.

A uniform rod has mass M and length 4L. It rests in equilibrium with o

1.	A uniform rod has mass M and length 4L. It rests in equilibrium with one end on a rough horizontal surface at A. At point B, at a distance 3L from A, it is supported by a fixed smooth roller. The rod just remains in equilibrium when theta = 30^(@) (a) Find the normal force applied by the horizontal surface on the rod at point A. (b) Find the coefficient of friction between the rod and the surface.
Answer» ANSWER :(a) `(Mg)/(2)` (b) `(1)/(sqrt3)`