A uniform rod of mass M = 2 kg and length L = 1.5 m is attached to a wall with a frictionless pivot and a string as shown in the diagram above. The initial angle of the rod with respect to the wall, is theta = 39ï¿½. The string is then cut. The moment of inertia of a rod about an axis through one end is 1/3ML^2.
What is the angular acceleration of the rod, a, immediately after the string is cut?
What is the angular velocity av of the rod when it is horizontal (theta=90)?