We were able to derive a formula for emergent entropic force by considering that the space is filled by small interactive Brownian degrees of freedom. We mechanistically showed that if we find the ratio of attracting to repelling degrees of freedom, the gravitational force on the smaller body toward a much larger body will recover when they are in contact. We further modified the degrees of freedom ratio to incorporate both bodies' radii which is necessary for the calculation of other forces where the size of particles are comparable. After presenting the attractive force of still bodies, we hypothesize that the spin of bodies is responsible for the formation of repulsive force.