shaft is designed with a diameter of 0.75 in and contains a 90-tooth spur gear with a 6-in pitch diameter. a deflection analysis of the shaft results in a transverse deflection at the gear location of 0.007 in. with a design factor of 1.5, determine the minimum allowable diameter of the shaft. a. 1026 c. 0.286 c. 1104 d. 0.903