roblem #2 (20 points)) The 9 ft beam AB has a weight of 250 lb and has a 300 lb load applied at the end in the positive x direction. It is supported by a ball-socket joint at A, and the cables DC and DB. Determine the tension in the cables (magnitudes) and the support reactions at A. 6 ft 2 ft 2 ft 4.5 ft 4.5 ft D 300 lb 250 lb