Yes but my question is, how do you know how much is in contact. A formula would have to have parameters such as the elasticity of the surface and the sphere, density of both maybe even gravitational acceleration and temperature.
Since the pressure a sphere exerts on a surface tends to infinity, how do you actually calculate it? My guess would be trying to see how many atoms of the surface (a straight line) and of the sphere collide. But this is very dependent on the materials and exterior factors.
I have searched...