Moment of Inertia of Gas as a Source of Added Gravitational Field in Galaxies

In this paper we propose a new perspective for explaining galaxy rotation curves. We conjecture that there is gravitational moment of inertia which, together with mass, contributes to the potential. substantiate formula potential created by inertia. validate our model computing orbital velocities several galaxies and showing computed correspond observed ones. Our proposed approach capable accounting constant gas outside galactic disc without relying on dark matter hypothesis. Furthermore, it addresses problems faced application hypothesis, e.g., absence inward collapse into galaxy, spherical distribution around galaxies, traces effect in two ultra-diffuse NGC 1052-DF2, 1052-DF4.