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PART - 2 CH - 8 Mechanical Properties of Solids — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysicsPART - 2 CH - 8 Mechanical Properties of Solids5 Marks
Question
Derive the formula for work done of stretched a wire.### The length of a wire is $L$, when a weight Mg is suspended on it, it length is increased by $\Delta L$ then prove that the work done is
$ W =\frac{1}{2} \text { Stress } \times \text { Strain }$
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