(Solved):   The compound shaft shown below has an aluminum (G-4,000 ksi) segment and a steel (G-12,000 ...

 

The compound shaft shown below has an aluminum (G-4,000 ksi) segment and a steel (G-12,000 ksi) segment. There are rigid supports at each end, and the compound shaft is subjected to a 100 ft-lb torque applied at the gear. If the rotation of the gear is to be less than 1.2 degrees, determine the minimum required diameter d. What is the maximum shear stress in each segment? Steel 15 in E