250 mm 2. Two steel shafts (G = 77.2 GPa) are connected to a coupling disk B and fixed to supports A and C. Shaft BC is solid; shaft AB is hollow with an inner diameter of 25 mm. For the 200 mm loading shown, determine (a) the reaction at each support, (b) B the maximum shear stress in shaft AB, (c) the maximum shear 38 mm stress in shaft BC. Ans: TA = 1.092 kN m , Tc = 0.308 kN m U 1.4 kN . m Tmax,AB = 47.5 MPa, Tmax,BC = 28.6 MPa 50 mm