1. The problem statement, all variables and given/known data http://img208.imageshack.us/img208/5158/29172992.jpg [Broken] So we have some kind of pole floating in water. Area = A. Density = rho. At the bottom we have a point weight M. We want to calculate the normal tension inside the pole $\sigma$ at a position x. I have the solution and the correct answer which is sigma=-rho*x*g . But will this really be correct below the water?