A suspension bridge cable hangs between two points A and B separate h…

Question

A suspension bridge cable hangs between two points A and B separate horizontally by 120m and with A 20m above B. The lowest point in the cable is 4m below B. The cable supports a stiffening girder which is hinged vertically below A, B and the lowest point in the cable. find the position and magnitude of the largest bending moment which a point load of 10 KN can induce in the girder together with the position of the load.