The gift that keeps on giving! Why not try out Brilliant this Christmas? =D https://brilliant.org/FlammableMaths 10-15% Off all my Merch :) Use Code 42069 over on null 10% Off All Design Requests! =D https://stemerch.com/pages/we-created-this-just-for-you Advent Calendar Playlist:    • Advent Calendar 2020   Analytical Mechanics Playlist:    • Analytical Mechanics   Today we use the Lagrange Formalism again, to derive the equations of motion for a pair of coupled masses, where one is rotation in a table, both being connected by a string! This system has some nice connections to planetary motion and the so-called Effective Potential :) Enjoy! =D Video sponsored by Brilliant btw :) Help me create more free content! =) https://stemerch.com/ https://www.patreon.com/mathable null Merch :v - null https://www.amazon.com/shop/flammablemaths https://shop.spreadshirt.de/papaflammy Become a Member of the Flammily! :0 null 2nd Channel: https://www.youtube.com/channel/UCnyZe3jFb27omDvOlR5BhZA -------------------------------------------------------------------------------- Wanna send me some stuff? lel: Postfach 11 15 06731 Bitterfeld-Wolfen Saxony-Anhalt Germany -------------------------------------------------------------------------------- Twitter: https://twitter.com/FlammableMaths Instagram: https://www.instagram.com/uncomfortably_cursed_mathmemes/ Flammy's subreddit: https://www.reddit.com/r/FlammyBois Facebook: https://www.facebook.com/flammablemaths/ Want to know more about me? Watch my QnA! =D https://www.youtube.com/watch?v=IjCWSDBI9Zc