The A-36 steel shaft is made from two segments: AC has a diameter of 0.8 in, and CB has a diameter of 1.0 in. If the shaft is fixed at its end A, and free at its end B. The shaft is subjected to a uniformly distributed torque of 30 lb-in/in. over its full length, and Concentrated Torque of 400 Ib-in at Point C, please determine the absolute maximum shear stress in the shaft. Please also determine the angle of twist at the free end "B". A 25 in G = 11 (106) psi 30 lb-in/in 25 in T=400 lb-in 30 lb-in/in B