A uniform circular disk of mass m and radius a is constrained to rotate with constant angular speed omega abotu an axis making an angle theta with the disk' s axis of symmetry. Find the magnitude and direction of the angular momentum L and the torque tau exerted on the disk by its supporting axis. Give a physical interpretation of your answer. We had doen a similar thing in class but the professor assumed that tau = 0 for some reason and then went on to get some precession related stuff. Do I follow the same steps(using Euler' s equations as he did) and if so what is the significance of the tau being zero?