One end of a long uniform rod of mass m and length l is clamped. The rod lies on a smooth horizontal surface and rotates on it about the clamped end with a uniform angular velocity w. The force exerted by the clamp on the rod has a horizontal component.

Question

$$\begin {array} {1 1} (a)\;mw^2l & \quad (b)\;zero \\ (c)\;mg & \quad  (d)\;\frac{1}{2}mw^2l \end {array}$$