An aluminum alloy extruded section (Figure P6.21) is subjected to a torsional load. Determ...

An aluminum alloy extruded section (Figure P6.21) is subjected to a torsional load. Determine the maximum torque that can be applied to the member if the maximum shear stress is 75.0 MPa. Neglect stress concentrations at changes in section.

FIGURE P6.21