According to Newton’s third law, in nature, the action of one body on another generates a reaction. This is best manifested by the laws of elastic deformation and hydrostatics, which are not similar in nature, but identical in mathematical mechanism. The article shows a comparative and identical approach to obtaining expressions of elastic deformation force and Archimedean force. The total values of the counteracting forces are determined through the values of the forces arising from the elastic deformation of the unit length of the spring and the displacement of a liquid of a single volume. The significance of the coefficients of elastic deformations and hydrostatics and their dependence on the physical properties of the spring and fluid are estimated.
Key words: deformation, mechanical stress, density, fluid, weight, hydrostatics, spring.
