A 10 lb uniform thin bar BC of length L=10 ft is pinned at B to the edge of a 18 lb uniform disk of radius R= 3.2 ft. The system is initially at rest in the position shown when a constant horizontal force P= 57 lb is applied to the end C. Assume that the disk rolls without slip. In addition, neglect the friction between the end C and the bar and the ground as well as the friction at the pin. Determine the angular speed of the disk when point B is driectly above the center of the disk. Hint: To determine the displacement of point C eep in mind that the overall displacement of point A is piR/2.