The steel swivel bushing in the elevator control of an airplane is held in place using a

Question:

The steel swivel bushing in the elevator control of an airplane is held in place using a nut and washer as shown in Fig. (a). Failure of the washer A can cause the push rod to separate as shown in Fig. (b). If the maximum average shear stress is Ï„_max= 21 ksi, determine the force F that must be applied to the bushing. The washer is 1/16 in. thick.

0.75 in.- (a) (b)