A short note on the buoyant force in nonuniform gravitational fields

Abstract

Lima and Monteiro [1] derived the buoyant force in a nonuniform gravitational field by applying a gradient version of the divergence theorem to the surface integral of the pressure forces [2]. Here it is outlined an alternate approach in the framework of fluid mechanics, based on the energy formulations of the equations of state for compressible fluids.

arXiv comment4 pages, accepted for publication in the Revista Brasileira de Ensino de Física