Q.6 A 75 mm diameter compound bar is constructed by shrinking a circular brass bush onto the outside of a 50 mm diameter solid steel rod. If the compound bar is then subjected to an axial compressive road of 160 kN determine; (a) the stress in the steel rod and (b) the force taken by the brass bush. Es = 200 GN/m², as = 11 x 10-6°C EB = 100 GN/m², αB = 18 × 10°/°C (14 marks) (6 marks)