2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/121366We discuss, in the context of classical electrodynamics with a Lorentz invariant cut-off at short distances, the self-force acting on a point charged particle. It follows that the electromagnetic mass of the point charge occurs in the equation of motion in a form consistent with special relativity. We find that the exact equation of motion does not exhibit runaway solutions or non-causal behavior, when the cut-off is larger than half of the classical radius of the electron.17 pages, 1 figureClassical PhysicsHigh Energy Physics - PhenomenologyHigh Energy Physics - Theorytext