Energy of a Satellite in Orbit | JEE Main 2027 Physics (English)

Free notes + solved JEE problems for this lesson: https://rankdeterminant.com/go/yt-phy... All lessons of this unit:    • JEE 2027 Physics | Unit 6 Gravitation   Kinetic, potential and total energy of a satellite in a circular orbit: K = GMm/2r, U = -GMm/r, E = -GMm/2r, the ratio 1 : -2 : -1, binding energy, the energy needed to change orbits, why air drag makes a satellite speed up, why astronauts float, and two solved JEE problems, including a low orbit versus escape. Chapters 0:00 Introduction 0:31 Kinetic and potential energy in an orbit 1:38 Total energy: always negative 2:34 Moving to a different orbit 3:23 The trap: air drag speeds a satellite up 4:23 Example 1: total energy of a 1000 kg satellite at height R 5:54 Example 2: energy to orbit vs energy to escape 7:31 Quick revision: K, U, E ratio, change of orbit, air drag A free JEE paper every day and a full JEE Main mock every Sunday: https://rankdeterminant.com/go/yt-dai... Physics · Unit 6 · Gravitation · Chapter 4 · Satellites and Kepler's Laws #SatelliteEnergy #JEEPhysics #JEE2027 Narrated with a computer voice.