고체역학 (Beer) — Principal Stresses Under a Given Loading: Problem 8.24

8.24 Solve Prob. 8.23, assuming that 25 kW is taken off at each gear. (Prob. 8.23: The solid shaft AB rotates at 720 rpm and transmits 50 kW from the motor M to machine tools connected to gears E and F. Knowing that \(\tau_{\text{all}} = 50 \text{ MPa}\) and assuming that 20 kW is taken off at gear E and 30 kW is taken off at gear F, determine the smallest permissible diameter of shaft AB.)