Several computer programs are recommended for simulating physical objects, including myphysicslab.com, which offers interactive mechanics simulations. The ODE and Newton physics engines, both written in C/C++, are also mentioned as viable options. Caligari trueSpace versions 5.2 and 6.6 feature integrated physical simulation engines, while MSC.visualNastran 4D 2004 is noted as a professional-grade engineering simulator. The discussion highlights the importance of good graphics in simulations, with a suggestion to explore Caligari's offerings. Overall, users are encouraged to consider various physics engines that can be integrated with graphics engines for enhanced simulation experiences.