Question 3 A shaft ABCD is shown in Figure 3 with total length, L = 2.1 m. The shaft BC is hollow with inner and outer diameters of 90 mm and 120 mm, respectively. Shafts AB and CD are solid with...

Extracted text: Question 3 A shaft ABCD is shown in Figure 3 with total length, L = 2.1 m. The shaft BC is hollow with inner and outer diameters of 90 mm and 120 mm, respectively. Shafts AB and CD are solid with diameter d. Given the torque at A, B, C and D is 6 kNm, 14 kNm, 26 kNm and 6 kNm, respectively. a) Determine the maximum and minimum shearing stress in shaft BC. b) Calculate the required diameter, d of shafts AB and CD if the allowable shearing stress in these shafts is 65 MPa. 0.9 m 0.7 m 0.5 m A 120 mm TA = 6 kN-m В TR = 14 kN-m C Tc= 26 kN·m D Tp = 6 kN-m Figure 3