! Required information The rotating shaft in the given figure is machined from AISI 1020 CD steel. It is subjected to a force of F= 8 kN. Find the minimum factor of safety for fatigue based on infinite life. Be sure to check for yielding. 25 D.] 35 D. -3 R. -500- -175- -50 D. -25 D. 20 20 180- -280- Determine the endurance limit for this material as well as the value after correction for surface finish, sizing, and loading. The endurance limit for this material is 235 MPa. The endurance limit after correction is 176.4 MPa.