A circular bar ABCD is rigidly fixed at A and D, is subjected to axial forces of 100 kN and 200 kN at sections B and C, respectively. Take E = 200 GPa, areaAB = 2000 mm2, areaBC = 3000 mm2, areaCD = 4000 mm2.
a. Determine the forces in each portion of the bar.
b. Displacement of point B & C.