5. The pendulum consists of a 20 kg sphere and a 10 kg slender rod. The pendulum has an angular velocity of 3 rad/s when the slender rod is horizontal as shown. 1) Determine the mass moment of inertia of the pendulum about an axis perpendicular to the page and passing through point O. (6 pts). 2) Determine the reaction at the pin O at the instant. Hint: set n-t coordinate; do Free body diagram; develop Equation of Rotation Motion. (10 pts). 1 m 2 m