Shell theorem
= Shell theorem
{wiki=Shell_theorem}
The Shell Theorem is a concept from classical mechanics and gravitation, formulated by Isaac Newton. It describes the gravitational effects of spherical shells of mass. The theorem consists of two main parts: 1. **Outside a Spherical Shell:** A uniform spherical shell of mass exerts a gravitational force on a point mass located outside the shell, as if all of its mass were concentrated at its center.