Figure P17.6/7 shows a tubular bronze [G = 6,500 psi] shaft with an outside diameter of 1.50 in. and an inside diameter of 1.125 in. Torques T B = 11,500 lb-in. and T C = 7,000 lb-in. act on the shaft...

Figure P17.6/7 shows a tubular bronze [G = 6,500 psi] shaft with an outside diameter of 1.50 in. and an inside diameter of 1.125 in. Torques T_B
= 11,500 lb-in. and T_C
= 7,000 lb-in. act on the shaft at B and C in the directions shown. The shaft segment lengths are L₁
= 18 in. and L₂
= 40 in. Calculate the total strain energy U stored in the shaft.