A shaft shown is made from an aluminum tube (shear modulus 27 GPa), which is bonded to a brass core (shear modulus 45 GPa). The length of the shaft is 1 m. The shaft is clamped at B and a torque T is applied at the free end A. The allowable shear stresses in aluminum and brass are 100 MPa and 120 MPa, respectively. The radius of the brass core is 25 mm, and the outer radius of the aluminum tube is 50 mm. Determine the maximum torque T can be applied at the free end. B