1. The problem statement, all variables and given/known data A solid cube of side ##l = r*pi/2## and of uniform density is placed on the highest point of a cylinder of radius ##r## as shown in the attached figure. If the cylinder is sufficiently rough that no sliding occurs, calculate the full range of the angle through which the block and swing (or wobble) without tipping off. (You can assume this range of equilibrium positions is stable). 2. Relevant equations None that I've been made aware of. 3. The attempt at a solution I'm trying to consider this in terms of a point at which the center of mass is directly above the axis of rotation but I'm struggling from there to be honest. Stability isn't something we've covered in my spec, so I'm not sure I have the knowledge to tackle this. I tried drawing a couple diagrams but I didn't get far.