The compound shaft, composed of steel, aluminum, and bronze segments, carries the two torques shown in the figure. If Tc = 250 lb-ft, determine the max- imum shear stress developed in each material. The moduli of rigidity for steel, alu- minum, and bronze are 12 106 psi, 4 106 psi, and 6 106 psi, respectively. A Steel 1.0 in. 6 ft- Tc Aluminum in. C 500 lb ft FIG. P3.22 Bronze 1.0 in. D 4 ft 3 ft - B