The two I-beams are welded together and are initially supported by the three cables of equal length hanging vertically from supports directly above A, B, and C. When applied with the appropriate offset d, the P = 250 N force causes the system to assume the new equilibrium configuration shown. All three cables are inclined at the same angle ? from the vertical, in planes parallel to the y-z plane. Determine this deflection ? and the proper offset d. Beams AB and OC have masses of 78 kg and 50 kg, respectively. The mass center of beam OC has a y-coordinate of 725 mm.