14: Potential Energy and Conservation of Energy Last updated Dec 30, 2020 Save as PDF 13.12: Appendix 13A Work Done on a System of Two Particles 14.1: Conservation of Energy Page ID24514 Peter DourmashkinMassachusetts Institute of Technology via MIT OpenCourseWare ( \newcommand{\kernel}{\mathrm{null}\,}\) 14.1: Conservation of Energy14.2: Conservative and Non-Conservative Forces14.3: Changes in Potential Energies of a System14.4: Change in Potential Energy and Zero Point for Potential Energy14.5: Mechanical Energy and Conservation of Mechanical Energy14.6: Spring Force Energy Diagram14.7: Change of Mechanical Energy for Closed System with Internal Nonconservative Forces14.8: Dissipative Forces- Friction14.9: Worked Examples