1. The problem statement, all variables and given/known data Consider a steel ball floating on the surface of mercury in a half-filled container. What happens when the rest of the container is filled with water? 3. The attempt at a solution Wouldn't the ball sink a little farther into the mercury with the added weight of the water on top of the ball? Or would it just stay where it's at? The mercury is obviously going to stay on bottom, and the steel ball is going to float in the water.