CoursHeroTranscribedText: Question 3 4 / 7 Pts Correct Answer You Answered The member below is composed of a tubular cylinder of stainless steel rigidly joined to a solid cylinder of carbon steel, one end of which is rigidly xed to a wall. The composite member is subjected to the torques shown. Torsion testing measured the shear stress at the proportional limit to be 20 ksi for stainless steel and 24 ksi for carbon steel, and the shear strain at the proportional limit was 0.0020 for both materials. Calculate the maximum shear stress in ksi in the carbon steel cylinder halfway along its length, i.e., 6 inches from the wall. Assume linear elastic behavior. Neglect any stress concentrations at the joints. Hint: The polar moment of inertia for a solid circular cross section is J = 7TT4/2. 1000 It in.-lb 4000 It I'll-lb 1/4" diameter hole stainless steel carbon steel 18' 12' 12