vehicle crashworthiness

 1. Determine the stresses on the outer surface at mid span of a cantilever shaft of radius 0.5 in., length 48 in., and acted by a torque T = 3.25 kip-in. at the free end. Show the stress distribution along any radius of the cross-section, and the state of stress on a 3D element. Draw Free Body Diagram (FBD) for full credit.