SM Targ 1989 C4 option 52

Two homogeneous rectangular thin plate fixedly connected (welded) at right angles to each other and fixed spherical joint (or glide) at point A, a cylindrical hinge at point B and weightless rod 1 or the two bearings at the point A and B and two weightless rod 1 and 2. The large weight slabs P1 = 5kN and weight at the plate P1 = 3kN. On the plate are a pair of forces with the moment M = 4kNm. Determine the constraint reactions at points A and B and the reaction rod. When the final calculations take a = 0.6m. Given: the point K: F3 = 10kN; α3 = 60; Point E: F4 = 12kN; α4 = 30.