A uniform rod of mass m 2 kg and length l 15 m is

Question

Compute the each part of given problem:

Problem: 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 = 39°. The string is then cut. The moment of inertia of a rod about an axis through one end is 1/3 ML².

Part A: What is the angular acceleration of the rod, a, immediately after the string is cut?

Part B: What is the angular velocity of the rod when it is horizontal (?=90)?

I need expert help to solve the above Problem.