Centre of Gravity & Centre of Mass | 9th Class Physics Chapter 4 | PTB 2025

In this video, we discuss the important concepts of Centre of Gravity and Centre of Mass, as part of Chapter 4: Turning Effect of Force from the 9th Class Physics PTB 2025 syllabus. Both terms are often confused, so this lecture explains their difference clearly using real-life examples and Urdu/Hindi language. 📘 Book: Physics Class 9 – Punjab Textbook Board 2025 📚 Chapter: 4 – Turning Effect of Force 🎯 Topics Covered: Definition of Centre of Mass Definition of Centre of Gravity Differences Between the Two Examples: Uniform and Irregular Bodies Real-Life Applications (e.g., balancing, lifting objects) Use in Engineering, Architecture & Body Movements 🎯 This lecture is explained in simple Urdu/Hindi and is helpful for board exam preparation. 🔔 Subscribe to The Lecturer Group and press the bell icon to stay updated with all new lectures. #CentreOfGravity #CentreOfMass #TurningEffectOfForce #9thClassPhysics #PhysicsChapter4 #PTB2025 #PhysicsInUrdu #TheLecturerGroup