CJT-Trebuchet Construction of a Trebuchet at the CJT-Highschool in Lauf. References https://en.opensuse.org/images/2/20/Trebuchet_simulation_slides.pdf https://build.opensuse.org/package/show/home:jnweiger:python/trebuchet-simulator http://www.physik.de.rs/schule/trebuchet http://youtu.be/d4GtP991sCQ https://www.youtube.com/watch?v=J0sa-UWGPxY