Mass, m = 4 kg Radius of gyration, k = 190 mm Length OG = 0.5 m 60 0 M = 20 Nm G 0.5 m = The pendulum shown has a mass of m = 4 kg and radius of gyration KG 190 mm as shown in the figure. A couple moment M = 20 Nm is applied to the pendulum in horizontal position, which causes it to rotate about the centre of rotation at Point O. At the instant shown (0=60), the velocity of its centre of gravity, VG = 10 m/s. a) Draw the free-body diagram, and b) Draw the kinetic diagram at this instant. c) Determine the angular acceleration of the pendulum. d) Determine the reaction forces at the pin connection at O.