2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/35714The string model of gravitational force is proposed where the string forms the mediation of the gravitational interaction between two gravitating bodies. It reproduces the Newtonian results in the first-order approximation and it predicts in the higher-oder approximations the existence of oscillations of the gravitational field between two massive bodies. It can be easily generalized to the two-body interaction in particle physics.7 pages, revtex, 0 figuresGeneral Relativity and Quantum Cosmologytext