Silly question I know, but I want to just clarify this. The actual question: A 0.45kg bug is crawling to the right along a metre-stick which is resting on the edge of a desk. If the mass of the uniform metre-stick is 0.37kg, how far from the edge of the desk can the bug crawl before the metre-stick flips off the desk? [PLAIN]http://img842.imageshack.us/img842/9154/58811064.jpg [Broken] My question: Eventually, I worked out that FN is the green arrow. But why is it there instead of being at where the red arrow is? I realize the entire table is the support. So should it not be in the middle of where the support touches the metre-stick? I also know found no way to solve this without putting FN in the middle. I got the answer, but I want to clarify this and double-check. [PLAIN]http://img194.imageshack.us/img194/9067/24168499.jpg [Broken] In case I am not correct by putting FN in the middle, the answer I got is 0.1644m. Is that right? Many thanks!