Preliminary Problem p5-1/p5-2/p5-3/ Engineering Mechanics Materials

Engineering Mechanics problem with solution
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P5-1. Determine the internal torque at each section and show the torsional stress on differential volume elements located at A, B, C, and D.
P5-2. Determine the internal torque at each section and show the torsional stress on differential volume elements located at A, B, C, and D.
P5-3. The solid and hollow shafts are each subjected to the torque T . In each case, sketch the shear stress distribution along the two radial lines.

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Thank you so much!