2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/147227Besides having some very interesting perturbatively unstable orbits, it seems that for a Schwarzschild black hole, below $r=3M$, the force always increases inward with increasing angular momentum. Here this previously known result is derived with greater simplicity, and a similar analysis is performed for black holes with angular momentum and charge.7 pagesAstrophysicstext