You can simulate everything in these professional (and expensive) software. https://ansyshelp.ansys.com/public/account/secured?returnurl=/Views/Secured/corp/v2

You can simulate everything in these professional (and expensive) software. https://ansyshelp.ansys.com/public/account/secured?returnurl=/Views/Secured/corp/v251/en/motion_theory/motion_theory_intro.html https://ansyshelp.ansys.com/public/account/secured?returnurl... But for hobby purposes I would suggest to contact some university, they have such software, and they could find simulation of balls motion at marble fountain interesting for research (and educational) purposes.