I would like to compute the torque that a (thin) disc applies onto a ring. I.e. I would like to try to understand what is the impact of this outer ring on the inner disc in the simulation below.
For this I would like to compute the gravitational potentiapotentiall generated by a (razor) thin disc and a ring. So the abstraction is the following (seen from 9 different angles)
Once I know how to compute the potential it becomesshould become straightforward to compute the torque one feature applies on the other. IHere I want to use FEM here for flexibility, which I will use when I will account for a more realistic abstraction of the problem. (e.g. exponential surface density profile in disc).