Question
Write the definitions of longitudinal strain and longitudinal stress.
✓
Answer
Longitudinal strain : The ratio of change in length and original length is called longitudinal strain. Due to tensile stress, the original length L of the wire or rod increased by $\Delta L$. Hence,
Longitudinal strain $=\frac{\Delta L }{ L }$
Longitudinal stress : When force is applied on a wire and its length increases in the direction of longitudinal deforming forces. The restoring force acting per unit area of the body is called longitudinal stress.
Longitudinal stress $=\frac{\text { Force }}{\text { Area }}=\frac{ F }{ A }$
Where, $F =$ Applied force and $A =\pi r^2$ Area of the wire or rod.
Longitudinal strain $=\frac{\Delta L }{ L }$
Longitudinal stress : When force is applied on a wire and its length increases in the direction of longitudinal deforming forces. The restoring force acting per unit area of the body is called longitudinal stress.
Longitudinal stress $=\frac{\text { Force }}{\text { Area }}=\frac{ F }{ A }$
Where, $F =$ Applied force and $A =\pi r^2$ Area of the wire or rod.
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