The compound shaft shown in Figure 3 is attached to rigid supports. For the bronze segment AB, the diameter is 75mm,br60MPa, and G=35GPa. For the steel segment BC, the diameter is 50mm,st80MPa, and G=83GPa. If a =2m and b = 1.5m (i) Calculate the maximum allowable torque for steel (Tst) and bronze (Tbr) based on allowable stress br60MPa and st80MPa, respectively (8 Marks) (ii) Estimate the maximum torque, Tmax that can be applied. (8 Marks) (iii) Compute the angle of twist (, in degree ) based on the maximum allowable torque for steel (Tst) and bronze (Tbr) in (a) (2 Marks) Figure 3: Rigid shaft made of bronze for segment AB and steel for segment BC