Part AB of the bar has a solid circular cross section, and part BC has a hollow circular cross section. The bar is fixed at both ends and a 150-in-kip axial torque is applied at B . Determine the...

Part
AB
of the bar has a solid circular cross section, and part
BC
has a hollow circular cross section. The bar is fixed at both ends and a 150-in-kip axial torque is applied at
B. Determine the magnitudes of the torques exerted on the bar by the walls at
A
and
C.