This relatively short chapter deals with the pressure under the surface of an incompressible fluid, which in practice means a liquid, which, compared with a gas, is nearly, if not quite, incompressible. It also deals with Archimedes’ principle and the equilibrium of floating bodies. The chapter is perhaps a little less demanding than some of the other chapters, though it will assume a familiarity with the concepts of centroids and radius of gyration, which are dealt with in Chapters 1 and 2.
Thumbnail: Iceberg in the Arctic with its underside exposed. The volmune of ice below the surface pushed the ice above the surface; this is an example of Archimedes Principle. Image used with permission (CC BY-SA 4.0; AWeith).