(Solved): A rotating step shaft is loaded as shown, where the forces FA and Fg are constant at 630 lbf and 31 ...

A rotating step shaft is loaded as shown, where the forces FA and Fg are constant at 630 lbf and 315 lbf, respectively, and the torque T alternates from 0 to 1800 Ibf-in. The shaft is to be considered simply, supported at points O and Cand is made of AISI 1045 CD steel with a fully corrected endurance limit of Se= 40 kpsi. Let Kf= 21 and Kfs=1.7. Take the value of design factor to be 2.5. 6 in 6 in 4 6 in T, n Fs Determine the minimal acceptable diameter of section BC using the DE-Gerber criterion. in. The minimal acceptable diameter of section BC is