The steel beam ABCD shown is supported at C as shown and supported at B and D by steel bolts each having a diameter of 8 mm. The lengths of BE and DF are 50 and 60 mm, respectively. All dimensions are given in millimeters. Prior to loading, the nuts are just in contact with the beam, which is horizontal. A force of 2 kN is applied at point A. For steel, E = 209 GPa. Determinethe stresses in the cables and the deflections of points A, B and D if (a) beam ABCD is considered to be rigid, and (b) beam ABCD is elastic with a second area moment of I = 200 mm^4