One last post for today, as I have conquered movie making in matlab and handbrake (for small values of conquered) to make a movie of particle motion in my 2-d universe.
I have softened the interaction so that it is now 1/r (which seems more sensible as we are one dimension down here). Here's the path (again, with the blue dot being the primary mass).
Hmmmm. Works, but needs more work.But isn't maths great!