A uniform rod AB of length l and mass m is free to rotate about point A. The rod is released from rest in horizontal position. Given that the moment of inertia of the rod about a is ml^2/3 the initial angular acceleration of the rod will be

Q: A uniform rod AB of length l and mass m is free to rotate about point A. The rod is released from rest in horizontal position. Given that the moment of inertia of the rod about a is ml2/3 the initial angular acceleration of the rod will be

(a) 2g/3l

(b) mgl/2

(c) (3/2) gl

(d) 3g/2l

Ans: (d)