A Pendulum Problem.By hanging a disc of Mass M and Radius R from its edge, a physicsl pendulum was made and then a small mass M is attached to the 0pposite edge and the whole arrangement is then displaced a small amount.Look for the moment of intertia of the pendulum around its axis of rotation and find the period of oscillation?pls explain step by step i am very confused on this problem.. Thank you so much!

A Pendulum Problem.By hanging a disc of Mass M and Radius R from its edge, a physicsl pendulum was made and then a small mass M is attached to the 0pposite edge and the whole arrangement is then displaced a small amount.Look for the moment of intertia of the pendulum around its axis of rotation and find the period of oscillation?pls explain step by step i am very confused on this problem.. Thank you so much!