Physics class 9th|| Unit 4 || last lecture centripetal force and sources

Описание: Physics Class 9 – Unit 4 Last Lecture: Centripetal Force and Sources
Chapter Name: Turning Effect of Forces
Board: Punjab Board 2025


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Physics Class 9 | Unit 4 Last Lecture | Centripetal Force and Its Sources | Qaisar BSA | Punjab Board 2025


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Welcome to Qaisar BSA
Physics Class 9 – Chapter 4: Turning Effect of Forces
Lecture: Centripetal Force and Sources (Last Lecture of Unit 4)

In this final lecture of Unit 4, you will learn:

What is Centripetal Force

Formula and unit of centripetal force

Real-life examples (car turning, stone in string, earth’s orbit)

Sources of Centripetal Force in different systems

How tension, gravity, friction, and normal force act as sources


Key Concepts:

Centripetal force: F = mv²/r

Direction of centripetal force

Importance of centripetal force in circular motion

Exam-focused Urdu explanation with diagrams


Perfect for:

Class 9 Punjab Board students (2025 exams)

Urdu and English medium learners

Final board revision and concept clarity


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