a single lug is designed having a radius of 0.375 inches, a width of 0.900 inches, a lug bore diameter of 0.375 inches, and a lug thickness of 0.250 inches. the lug is fabricated from a material with an ultimate strength of 35000 psi in the r-d direction, and ultimate strength of 29000 psi in the w-d direction (use curve