The assembly consists of an A-36 steel rod CB and a 2014-T6 aluminum rod BA, each having a diameter of 20 mm. The rod is subjected to the axial loadings at A and at the coupling B. Take l = 1.5 m and F = 60 N. Neglect the size of the connections at B and C.
Part A: Determine the displacement of the coupling B.
Part B: Determine the displacement of the end A.