Question

Poison's ratio formula in terms of lateral strain strain and transversals strain

Answer 1

It will compress in the middle. If the original length and breadth of the rubber are taken as L and B respectively, then when pulled longitudinally, it tends to get compressed laterally. In simple words, length has increased by an amount dL and the breadth has increased by an amount dB.
In this case,
εt =  −dBB
εl= dLL
The formula for Poisson’s ratio is,
μ = −εtεl
where,
εt is the Lateral or Transverse Strain
εl is the Longitudinal or Axial Strain
μ is the Poisson’s Ratio
Strain on its own is defined as the change in dimension (length, breadth, area…) divided by the original dimension.


i hope help you

Answer 2

is negative of ratio of transverse strain to axial strain