The pendulum consists of a 10-kg uniform slender rod and a 15-kg sphere. If the pendulum i...

The pendulum consists of a 10-kg uniform slender rod and a 15-kg sphere. If the pendulum is subjected to a torque of M = 50 N • m, and has an angular velocity of 3 rad/s when θ = 45°, determine the magnitude of the reactive force pin O exerts on the pendulum at this instant.