Solve Prob. 6.83, assuming that a 6-mm-thick plate is bent to form the channel shown.
Prob. 6.83
A steel plate, 160 mm wide and 8 mm thick, is bent to form the channel shown. Knowing that the vertical load P acts at a point in the midplane of the web of the channel, determine
(a) the torque T that would cause the channel to twist in the same way that it does under the load P,
(b) the maximum shearing stress in the channel caused by the load P
