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

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 normal stress for the washer is σ_max = 60 ksi and the maximum average shear stress is τ_max = 21 ksi , determine the force F that must be applied to the bushing that will cause this to happen. The washer is in. thick.