The missing part removed by the Mod is
$$r=c$$.
I get your point about rotation invariance. But that's the same for the rotating bucket that you deal in cylindric coordinates and therefore you get obviously a parabola as a result and not a hyperbola.
However my question remains. Does the...
Hi
The rotating bucket problem with a fluid is well known as a homework. For the fun i wanted to adapt it to the case of a massive non-rotating sphere surrounded by a fluid. However i don't know if the calculations i made are correct or don't make sense at all (even if the result lead to an...