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What is strain ? Explain longitudinal strain (epsi). |
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Answer» Solution :If a solid body under external force, its dimension CHANGE by three ways: (1) In length (2) in volume and (3) in shape The fractional changes in dimension of body is known as strain LONGITUDINAL Strain : The deforming force PRODUCES a fractional change in length is known as longitudinal strain. If the original length Lis of the body and F is the deforming force its change in length is `DeltaL,` then longitudinal strain `epsi _(l) = (DeltaL)/(L)` If the length increases the corresponding longitudinal strain is CALLED tensile strain and if the length decreases then the corresponding strain is called compressive strain. 
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