Why Gravity Is Weaker Than Other Fundamental Forces

Gravity, though fundamentally important at astronomical scales, is remarkably weaker than the other fundamental forces at atomic and quantum levels. This article explores the underlying reasons for this relative weakness by comparing gravity’s geometric nature to the gauge-based interactions of the Standard Model. Using Einstein’s field equations, Yang–Mills theory, and the geodesic deviation equation, we argue that gravity’s coupling to the external structure of spacetime demands more effort to excite. Finally, we discuss how the absence of negative mass and nonlinearity of curvature allows gravity to become dominant at cosmic scales.