Maybe I will be shown the light but physics has always seemed a little off expectation to a fault.
I submit this simple example done with the latest Blender 2.82a (.7 still?)
In it we see a cube with a torus as a dangling hook loop as an active dynamic shape.
Then we have a passive torus for hanging the active dangler.
It will break away after about a second say 24-30 frames?
Obviously you need Shape mesh and I lower the friction on both, it should fall to a center of balance that is not really the center of mass (which can be moved around without effect).
I have messed with every expected and then some parameter here is a short list as an example of what users go thorough trying to figure it out, so it’s a little excessive to what you might initially expect to need to do.
up res the models, instead of scaling up (tried that in different ways of applying from big to small or not etc. applying vs not applying procedural subdivisions etc.) I set the Sensitivity Margin to many values (I am assuming that’s why people say scale sims since they missed that point.), moving pivots, adjust friction, Scene’s Speed, Steps, Solver iterations, etc.
There are other confusing possibly related otherwise minor buggy UI issues like “Delete All Bakes” not making the yellow-gold color in the timeline clear. (Zero frame makes no difference and anything else you can think of).
In the end it is frankly a bizarre an futile experience trying to do even a simple test like this.
I guess my motivation in this case, not that it matters, is to find the center of balance for a hook on something you might 3D print. The enter of mass is clearly not such a thing in this regard.
One issue is when the form bends over it kind of knocks itself free by pressure against the passive hook, if that makes any sense.
I imagine maybe there should be a map generated that shows forces of pressure and that would be used to guide and limit the simulation.
Anyway as you can see it simple won’t respect the obvious collision or binding of the interconnected geometry.
If there is something I am missing I would be surprised but also it won’t mater because it is too finicky to get to work in a reasonable amount of time.
Practically every physics thing I have tried to do with all versions ever of Blender are disturbingly unusable like this simple example clearly shows.
How would I best move forward on asking for a feature request to rebuild it completely or is this a bug report?
Yours Truly (finally frustrated and resorting to trying to help by showing the community here there are really serious problems with a lot of Blender.)