>>2164770Physics simulators are either scientific or game-related, and there's a bit of a big gap between those two. Scientific is about accuracy and number crunching, game-related is much more fast and loose.
Also it all depends a bit if you're more interested in learning or in actually getting a finished product. I mean if it's the latter, you can stick to one of the popular game engines, if it's the former you can really end up digging ridiculously deep when it comes down to learning how everything works but at that point you're probably not gonna make a polished product any time soon, it's a bit of a tradeoff.