A uniform rod of mass m and length l can rotate freely on a smooth horizontal plane about a vertical axis hinged at point H. A point mass having same mass m coming with an initial speed u perpendicular to the rod, strikes the rod inelastically at its free end. Find out the angular velocity of the rod just after collision?
(1) 3u/l
(2) 3u/4l
(3) u/4l
(4) 3u/2l
