For solid round steel bar (the modulus of elasticity of the material is E = 210GPa and the poisons ratio is 0.3) shown in Fig. calculate: a) The axial stress and strain in each segment of the bar if the diameters of the segment are dAB=2cm, dbc-4cm, dcp=7cm. Also calculate the total change in the length of the bar. b) The change in diameter in each segment of the bar. c) The final diameter of the bars in each segment. 100KN A 150KN 1m B 250KN 2m C 3m D