Energy stored in stretching a string per unit volume is

Energy is the capacity to perform work or produce change and exists in various forms including kinetic potential thermal and chemical energy. It can be transformed from one form to another but cannot be created or destroyed according to the law of conservation of energy. Energy is fundamental to all physical processes.

Class 11 Physics Chapter 8 focuses on mechanical properties of solids discussing stress strain relationships Young’s modulus bulk modulus and shear modulus. It covers the concepts of elasticity Hooke’s law factors influencing these properties and practical applications in engineering and material science. Understanding these principles is vital for designing strong and resilient structures.