Скачать или смотреть 1st Year Physics New Book 2025 | Ch 3 Circular & Rotational Motion | Moment of Inertia of Rigid Body

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In this lecture, we will study FSc 1st Year Physics (New Book 2025) Chapter 3 – Circular and Rotational Motion, Topic: Moment of Inertia of a Rigid Body.

The moment of inertia is one of the most important concepts in rotational mechanics — it plays the same role in rotational motion as mass does in linear motion. In this detailed and conceptual lecture, we will understand what the moment of inertia means, how it depends on the mass distribution of a body, and why it is essential in studying rotational dynamics.

You’ll learn:
🔹 The concept of moment of inertia and its physical significance.
🔹 The difference between mass and moment of inertia.
🔹 The factors affecting moment of inertia (mass, axis of rotation, and shape).
🔹 The mathematical expression and unit of moment of inertia.
🔹 Examples and derivations related to the moment of inertia of simple rigid bodies (like a ring, disc, and rod).
🔹 The real-life applications of moment of inertia in daily life and engineering.

This lecture is perfect for FSc 1st Year students studying from the Punjab Textbook New Syllabus 2025, and it will help you prepare effectively for your board exams and conceptual understanding.

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📚 Topics Covered:
1️⃣ Concept of Rigid Body
2️⃣ Definition of Moment of Inertia
3️⃣ Unit and Dimensional Formula
4️⃣ Factors Affecting Moment of Inertia
5️⃣ Moment of Inertia of Common Bodies
6️⃣ Applications in Daily Life


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