1. The problem statement, all variables and given/known data The lamina is free to rotate about a fixed smooth horizontal axis, perpendicular to the plane of the lamina, passing through the point A. and hangs in equilibrium. Find the angle between AC and the horizontal. I have attached a the solution to the question, it seems like there is no line to the question and theta there are showing in the working out. 2. Relevant equations I think the answer is 9.46 degree as tanφ= 1/6 3. The attempt at a solution. I have attached screenshot to this thread. Is the solution wrong or have I been thinking in a wrong way? What are looking at that theta shown in the screenshot?