How to Derive Centripetal Acceleration? | a_c = v²/r Proof | Class 11 Chapter 4 | In Pashto

DESCRIPTION: Centripetal Acceleration Derivation - Class 11 Physics Chapter 4 (Circular Motion) Complete Proof. In this lecture, we will derive: ✅ Centripetal acceleration formula a_c = v²/r ✅ Why |V1| = |V2| = V = Constant in uniform circular motion ✅ Only direction of velocity changes ✅ Similar Triangles Method (ΔV/V = ΔS/r) ✅ Proof that ΔV/Δt = a_c and ΔS/Δt = V This derivation is very important for Federal Board, Punjab Board, KPK Board & All Pakistan Boards - Class 11 Physics. 📚 Chapter: 4 - Circular Motion & Gravitation 📖 Topic: Centripetal Acceleration Derivation 👨‍🏫 Channel: Smart Learning with Najeeb ⏱️ TIMESTAMPS: 00:00 - Introduction to Centripetal Acceleration 00:45 - Assume body moving with uniform speed V 01:30 - Diagram Explanation (OAC Triangle) 02:40 - Similar Triangles Concept 03:50 - Ratio ΔV/V1 = ΔS/r 05:00 - Divide by Δt and Final Proof 06:30 - Final Formula a_c = v²/r #CentripetalAcceleration #CircularMotion #Class11Physics #PhysicsDerivation #ac=v2byr #FBISE #KPKBoard #PunjabBoard #SmartLearningWithNajeeb #CentripetalForce #PhysicsClass11