One end of a uniform rod of mass m and length l is clamped. The rod **** on a smooth horizontal surface and rotates on it about the clamped end at a uniform angular velocity el The force exerted by the clamp on the rod has a horizontal component
(a) m w2l
(b) zero
(c) mg
(d)1/2 mw2l
(d)1/2 mw2l.
Explanation:
Since the rod rotates on the horizontal surface, the horizontal component of the force applied by the clamp is the centripetal force = mω²r = mω²(l/2) = mω²l.
