2. The assembly consists of a slender rod (mass of 20 kg) and thin disk (mass of 15 kg), rotating in a vertical plane around the pin at O. At the position shown, the assembly has an angular velocity of 3 rad/s (clockwise) a.) Find mass moment of inertia of the assembly about point O. b.) Draw free body diagram and kinetic diagram of assembly. c.) Find angular acceleration of the assembly at the position shown. d.) Find pin reactions at O at the position shown. Note: Equation of motion must be used for solution. If free body diagram and kinetic diagram are not drawn properly, the solution will be incoherent and zero grade will be assigned. Also, all the calculations and steps must be shown. Otherwise, the solutions will be incoherent and zero grade will be assigned. (10 marks) 0 30 L=500mm loomm