Increasingly, hardware and software systems are being developed for applications where they must interact directly with a physical environment. This trend significantly complicates testing computational systems and necessitates modeling and simulation of physical environments. While numerous tools provide differing types of assistance in simulating physical systems, there are surprising gaps in the support that these tools provide. Focusing on mechanics as an important class of physical environment, we address two such gaps, namely, the poor integration between different existing tools and the performance limitations of mainstream symbolic computing engines.