The pin-connected structure shown in Figure P5.35/36 consists of a rigid beam ABCD and two supporting bars. Bar (1) is a bronze alloy [E = 105 GPa] with a cross-sectional area of A 1 = 290 mm 2 . Bar...

The pin-connected structure shown in Figure P5.35/36 consists of a rigid beam ABCD and two supporting bars. Bar (1) is a bronze alloy [E = 105 GPa] with a cross-sectional area of A₁
= 290 mm². Bar (2) is an aluminum alloy [E = 70 GPa] with a cross-sectional area of A₂
= 650 mm². All bars are unstressed before the load P is applied; however, there is a 3-mm clearance in the pin connection at A. If a load of P = 85 kN is applied at B, determine

(a) the normal stresses in both bars (1) and (2).

(b) the downward deflection of point A on the rigid bar.