Please calculate the diameters of the shafts for case 1 and 2. Torque transfer is T= 420 Nm. DG-Goodman theory: 3(KrsTa)]/2 1 1/3 d=([4(K,M) + 3(K,,T.)] + [4(K,M) + 3(Ky, Tm)"]})" Material: 1020HR; n = 1.8; End-milled keyseat Case 1. The moment diagrams of X-Z plane and X-Y plane are as the following figure. Bearing 1 Gear 2 Gear 3 120.00 Bearing 2 105.08 100.00 80.00 70.65 60.00 48.26 X-Z X-Y 40.00 20.00 8:00 12.57 0.00 0.00 0 19 42 66 Case 2. The moment diagrams of X-Z plane and X-Y plane are as the following figure. Bearing 1 Gear 2 Bearing 21 O K Gear 3 50.00 0.00 8.00 0.00 0 -50.00 -22.6 47 2.5 -100.00 -99.88 -150.00 -124.62 P -200.00 -214.20 n -250.00 -X-Z X-Y