15.2: Introduction
( \newcommand{\kernel}{\mathrm{null}\,}\)
Sometimes fluids will remain separated such that one type of fluid is floating on top of another type of fluid. We see this if we add oil to water; the oil floats on the water. Whether a particular material will float may depend on relative density. An object that is less dense than the fluid will float. An object that has a higher density than the fluid may float under certain circumstances.