Скачать или смотреть 4.5-2 | Absolute Potential Energy | Class 11 Physics New Book

In this Class 11 Physics lecture (Punjab Curriculum – New Book), we explore the concept of Absolute Potential Energy — a key idea in understanding gravitational and mechanical energy systems.

This lesson explains how the potential energy of a body depends on its position in a gravitational field, and how we choose a reference point (usually the Earth’s surface or infinity) to measure absolute potential energy.

In this video, you will learn:

Definition of absolute potential energy

Understanding gravitational potential energy and its dependence on position

Concept of reference level for potential energy

Mathematical expression for absolute potential energy 𝑈 = −𝐺𝑀𝑚/𝑟

Explanation of the negative sign in potential energy

Relation between absolute potential energy and work done by gravitational force

Real-life examples:
• A falling stone near the Earth’s surface
• A satellite orbiting the Earth

This lecture is ideal for:

Punjab Board F.Sc Physics (1st Year – New Book)

FBISE, Sindh Board, KPK Board, AJK Board

O Level, A Level, AP Physics, IB Physics

By the end of this lecture, you will clearly understand what absolute potential energy means, why it is often negative, and how it connects work, energy, and gravitational force in classical mechanics.



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Youtube post
Chapter 4 Mcqs. 4,4
The height above the ground of a child on a swing varies from 0.5 m of his lowest point to 1.5 m at his highest point. The maximum speed of the child is approximately:
(a) 1.5ms¹ (b) 4.4 ms¹ (c) 9.8 ms¹ (d) Depends upon child's mass

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