4 5. A uniform half-disk of mass m = 10 kg and radius R = 3 meters is on the ground and is released from rest at the position shown. OG 4R/3, where "OG" is the distance from point "O" to point G. = IG= 0.320 mR2, where "G" is the center of mass of the half-disk (a) Draw a free body diagram of the disk. Clearly indicate the direction of all forces acting on the disk. (b) Find the minimum value of s for which the half-disk starts to roll on the ground without slipping. 8 (c) Find the initial acceleration of point B if the half-disk starts to roll on the ground without slipping. B R OG A y g = 9.81 m/s