1. The problem statement, all variables and given/known data I have encountered this problem several times in class, but have never really understood it. There is a solid round bar that is fixed on one end, and that bends 90 degrees a ways down. At the free end of the bar there are forces applied in each Cartesian direction. Like this: http://farm4.static.flickr.com/3448/4559398860_d6c6e250a0_o.jpg" The question is to determine the shear stress [tex]\tau[/tex]xy at point A (on the outer edge of the tube, radially parallel to the z-axis). 2. Relevant equations Torsion - [tex]\tau[/tex] = Tc/J Beam - [tex]\tau[/tex] = VQ/It 3. The attempt at a solution I plug in my values in the above equations, and add them up depending on the shear direction, but I don't seem to get the right answer. I'm hoping someone can help me with the general idea for this type of problem or point me to a website that explains it clearly. Thanks!