Guess who? Yeah it's me yet again. LOL I am a bit lost with the following problem. Here's the problem: A uniform plank of length 4.5m and weight 223N rests horizontally on two supports, with 1.1m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 450N walk on the overhanging part of the plank before it just begins to tip? Drawing Ok, so......I don't know what to do here. As far as forces go there are two forces acting up on the plank by those two supports. The plank itself has a weight force pointing down and the man has a weight force pointing down. I thought perhaps I should use the center of gravity equation but I don't really understand what that would do for me. Any help to get me started in the right direction would be greatly appreciated.