CoursHeroTranscribedText: Prob. 4.5-7. The gears and splined ends apply torques TA through To to a steel shaft, as shown in Fig. P4.5-7. a) Determine the maximum shear stress in the shaft, and (b) determine the relative twist angle between ends A and D, that is, determine dD/A = QD - PA. G = 75 GPa, d = 25 mm, L1 = 200 mm, L2 = 300 mm, L3 = 400 mm, TA = 250 N . m, TB = -400 N . m, To = -350 N . m, TD = 500 N . m - LI L2 L3 P4.5-7, P4.5-8, and P4.5-9