5. The forces shown act on the gears parallel to the y-z plane. The force on gear A is 300 lbf. Consider the bearings at points O and B to be simple supports. The material has yield strength of 60 kpsi. For a static analysis and a factor of safety of 3.5 determine the minimum safe diameter of the shaft using: (A) distortion energy theory. (B) max. shear stress theory. Clear A 24-in D. 20 in FA 20° 16 in Gear C 10-in D. Fe 10 in