1. A steel rod of diameter 50 mm and E = 200 GPa is subjected to a set of loadings as shown below. If the diameter of the rod is 50 mm, determine the displacement at points A and B. Neglect the size of the couplings at B, C, and D. 0.6 m 1.20 m -0.80 m- 60 kN 80 kN 5 3 4 30 D 4 B 30 3 5 80 kN 60 kN 100 kN