Dear friends, Welcome again, in this blog we will learn about  #What is Stess? #What is a formula for Stress? #What are the different types of stress? also, we will learn about #What is Strain? #What is the formula of Strain? #What are the different types of strain? which will help to know the basic things of stress and strain. What is Stress & Strain? Stress and strain are key concepts in mechanics and materials science, especially when studying how materials respond to forces and deformations. 1. Stress: Stress is defined as the internal resistance of a material to deformation when subjected to an external force or load. Symbol: The Greek symbol sigma ( σ ) is commonly used to indicate stress. Mathematically, Stress = Internal Resisting Force (P) / Cross Sectional Area (A) Here, R = Resistance to force P, R = P σ = P/A Units : It is measured in units of force per unit area , such as Pascals (Pa) in the International System of Units (SI). Remember, 1 Pa = 1 ...