An aluminum alloy (E=10,000 ksi) pipe with a cross-sectional area of A=4.50 in^2 is connected at flange B to a steel (E=30,000 ksi) pipe with a cross-sectional area of A= 3.20 inch^2. The assembly, as shown below, is connected to a rigid supports at A and C. For the loading shown, determine (a) the normall stresses in aluminum pipe (1) and steel pipe (2); (b) the displacement of flange B . The pic isn't loading but the force is at 160" from the left (at the flange) with 2x 45 kips to the right. The steel pipe is 220" long.