The pin-connected structure consists of a rigid beam ABCD and two supporting bars. Bar (1) is an aluminum alloy [E = 77 GPa] with a cross-sectional area of A1 = 730 mm2. Bar (2) is a bronze alloy [E = 102 GPa] with a cross-sectional area of A2 = 580 mm2. All bars are unstressed before the load P is applied; however, there is a 2.3-mm clearance in the pin connection at A. If a load of P = 52 kN is applied at B, determine:
(a) the normal stresses σ1, σ2, in both bars (1) and (2).
(b) the normal strains ε1, ε2, in bars (1) and (2).
(c) determine the downward deflection eA of point A on the rigid bar.