Problem 5 (15 points): A uniform circular disk is pivoted around a fixed point at its edge. It starts at rest with the pivot at its lowest point and before after then is allowed to swing under the influence of gravity. At the moment when the center of the 0 =0 disk is the same height as the fixed point, find the direction of the force exerted by the pivot. Express this direction as the angle the force vector makes with the vertical. pivot