Question: For the shaft in Problem. replace the torque at C by two equal torques of 1500 lb-in at B and C. Compute the angle of twist at B and C and the torsional reactions at the boundaries.
Problem: A shaft is made of three parts, as shown in the accompanying figure. Parts AB and CD are made of the same material with a modulus of rigidity of G = 9.8 x 103 ksi, and each has a diameter of 1.5 in. Segment BC is made of a material with a modulus of rigidity of C = 11.2 x 103 ksi and has a diameter of 1 in. The shaft is fixed at both ends A torque of 2400 lb-in is applied at C. Using three elements, determine the angle of twist at B and C and the torsional reactions at the boundaries.
