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= The pin-connected structure shown consists of a rigid bar ABCD and two axial members. Bar (1) is steel [E - 200 GPa;a = 11.7% 100PC), with a cross-sectional area of 41 - 350 mm. Bar (2) is an aluminum alloy [E- 70 GPa;a = 22.5x 100PC), with a cross- sectional area of Az - 430 mm2. The bars are unstressed when the structure is assembled. Assumea-390 mm, 6–550 mm, c-760 mm, P-36 kN, and L-900 mm. After a concentrated load of P-36 kN is applied and the temperature is increased by 25°C, determine (a) the normal stresses in bars (1) and (2). (b) thedeflection of point Don the rigid bar. L (1) u B h On a piece of paper, sketch a FBD of rigid bar ABCD. Write an equilibrium equation which relates F1, the force in Bar(1), and F2, the force in Bar (2). Select the correctequation below. By convention, a tension force is positive, and a compression force is negative. a a Answer: e) F1-0.5851 F2-29.1064 KN c) F1 +0.585172-29.1064 KN O b) F1-F2-0 Od) F1+F2-36 KN a) F1+F2 - 0 Save for Later Attempts:0 of 3 used Submit Answer Part 2 On a piece of paper, sketch a deformation diagram. Based on this diagram, write a geometry-of-deformation equation in terms of deformations 81 and 8), which are the deformations of Bars (1) and (2), respectively. From the geometry-of-deformation equation, enter the ratio, 81/82. Answer: 81 / 82 = i