Change in length of bar under external load |simple stress and strain 06 |Engg.Mech||Sumit Dwivedi||

How to find change in length of bar under external load.
With the help of this video student will be able to find change in length of bar under external load using principal of superposition
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Here is a clear, student-friendly, and SEO-optimized **YouTube video description* for an Elongation of Bar explanation video:

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##learningwithSumit

🧪 *What is the elongation of a bar and how do we calculate it?*
In this video, we explain the concept of elongation in bars subjected to axial loads. You will learn how materials deform under tension, how to apply the standard formula, and how factors like length, area, and material properties affect deformation. Perfect for engineering students, diploma learners, and exam preparation in Strength of Materials (SOM).

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⭐ *What You’ll Learn:*

🔹 *Definition of elongation* – What it means in mechanics of materials
🔹 *Axial loading concepts* – Tension, compression & stress
🔹 **Formula for elongation**:
  ΔL = (P × L) / (A × E)
🔹 *Explanation of each term* – Load (P), Length (L), Area (A), Young’s Modulus (E)
🔹 *Step-by-step solved example*
🔹 *Assumptions and limitations*
🔹 *Real-world applications* – Structures, bridges, rods, columns

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⏱ *Chapters:*

Introduction
What is Elongation?
#Axial Load & Stress Explanation
#Derivation of Elongation Formula
#Parameters Affecting Elongation
Solved Example
Applications in Engineering
Summary

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