The compound shaft is attached to a rigid wall at each end. For the bronze segment AB, the diameter is 75 mm and G = 35 GPa. For the steel segment BC, the diameter is 50 mm and G = 83 GPa. Given that a = 2 m and b = 1.5 m, compute the largest torque T that can be applied as shown in the figure if the maximum shear stress is limited to 60 MPa in the bronze and 80 MPa in the steel. A 75 mm Bronze 50 mm B Steel FIG. P3.18, P3.19