The assembly consists of the solid rod AB, tube BC, and the lever arm. If the rod and the...

The assembly consists of the solid rod AB, tube BC, and the lever arm. If the rod and the tube are made of material having an allowable shear stress of Tallow = 12 ksi, determine the maximum allowable torque T that can be applied to the end of the rod and from there the couple forces P that can be applied to the lever arm. Tire diameter of the rod is 2 in., and the outer and inner diameters of the tube are 4 in. and 2 in., respectively.