Solve Prob. 441 using Castiglianos theorem. Since Eq.
Chapter 4, Problem 4.71(choose chapter or problem)
Solve Prob. 441 using Castiglianos theorem. Since Eq. (418) for torsional strain energy was derived from the angular displacement for circular cross sections, it is not applicable for section BC. You will need to obtain a new strain energy equation for the rectangular cross section from Eqs. (418) and (341)
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer