Problem 6.30 in the text Engineering Dynamics by Ginsberg. While you may think that you require the mass of the bar, that is not the case. When you set up

the equations of motion,you will be able to solve for the two normal forces and the quantity mo in terms of the applied load (mg). You can then solve for o by dividing both sides by m. (Granted, if you wanted to get the normal forces, you would need the mass of the bar.) Answer: o-22.45 rad.(Not the answer in the back of the book.)sec2-