https://gdpark.blog/tags/gravitation/Recent content in Gravitation on gdpark.blogHugoenThu, 25 Jun 2015 00:00:00 +0000https://gdpark.blog/posts/classical-mechanics-10-the-orbit-equation-via-energy-methods/Thu, 25 Jun 2015 00:00:00 +0000https://gdpark.blog/posts/classical-mechanics-10-the-orbit-equation-via-energy-methods/We re-derive the orbital equation using energy conservation instead of angular momentum — plus a quick vibe check on why gravitational potential energy is negative.