Universal Law of Gravitation Every particle attracts every other particle with a force proportional to the product of their masses and inversely proportional to the square of the distance between them Gravitational attraction between two objects Inverse square law Formula $F_{gravity} = G \frac{M_1M_2}{R^2}$ $F_{gravity}$ is the force of gravity between two objects $M_1$ and $M_2$ are the masses of two objects $R$ is the separation of those objects $G$ is the universal gravitational constant Physics