Circular & Rotational Motion | Angular Velocity, Torque, Angular Momentum | Part 1 |Class 11 Physics

Welcome to AbSrk Physics! In this video, we cover the fundamentals of Circular & Rotational Motion (Part 1) for Class 11 Physics. This session bridges the gap between linear motion concepts and rotational dynamics, making it extremely helpful for school exams as well as competitive exams like JEE and NEET. Topics Covered in this Video: Angular Displacement: Concept and its relation to linear displacement Angular Velocity: Definition and relation with linear velocity Angular Acceleration: Definition and relation with linear acceleration Moment of Inertia: The effective mass in rotational motion Radius of Gyration: Explanation and formula Standard Formulae: Moment of Inertia for various uniform shapes (Disc, Ring, Sphere, Cylinder, Rod) Torque & Moment of Force: Effective force in rotation Angular Momentum: Concept and relation with linear momentum Law of Conservation of Angular Momentum: With real-life examples Numerical Problems: Step-by-step problem-solving based on rotational motion [00:00] Intro: Circular & Rotational Motion Overview [00:55] Angular Displacement & Relation with Linear Displacement [02:52] Angular Velocity & Relation with Linear Velocity [04:06] Angular Acceleration & Relation with Linear Acceleration [08:26] Moment of Inertia (Rotational Mass) [13:05] Radius of Gyration [14:44] Standard Formulae for Moment of Inertia [17:00] Torque & Moment of Force [20:31] Angular Momentum [23:08] Law of Conservation of Angular Momentum [27:16] Numerical Problem 1 (Angular Acceleration & Velocity) [30:05] Numerical Problem 2 (Disc, Couple Force & Kinetic Energy) [33:34] Numerical Problem 3 (Shrinking Earth & Time Period)