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Curated by: Khan Academy India - English (26 videos)
In this video, we explore the concepts of conservative and non-conservative forces in an easy-to-understand way. Learn how conservative forces like gravity and spring force are path-independent and have potential energy associated with them, while non-conservative forces like friction and air resistance depend on the path and dissipate mechanical energy. We cover key characteristics, real-life examples, and simple derivations to make the concepts crystal clear. Perfect for students preparing for exams or anyone curious about physics fundamentals! Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/science/in-in-class11th-physics 0:00 – Introduction 0:04 – What are Conservative Forces? 0:18 – Path Independence Explained 0:38 – Work Done in a Closed Path is Zero 1:00 – Key Characteristics of Conservative Forces 1:40 – Potential Energy and Conservative Forces 2:01 – Example: Lifting a Box Vertically (Straight Path) 2:48 – Work Done Calculation: Vertical Lift 3:18 – Work Done Along an Inclined Path 4:09 – Derivation: Work Done on Incline = Work Done Vertically 5:01 – Conclusion: Work Done is Path Independent 5:05 – Introduction to Non-Conservative Forces 5:13 – Path Dependence Explained 5:36 – Energy Dissipation in Non-Conservative Forces 5:46 – Example: Friction while Travelling from Home to School 6:38 – Key Characteristics of Non-Conservative Forces 6:52 – Examples of Non-Conservative Forces 6:56 – Summary: Conservative vs Non-Conservative Forces 7:03 – Outro Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Chandan Ganotra