If a force is applied to an elastic wire of the material of Poisson's ratio 0.2 there is a decrease of the cross-sectional area by 1 % . The percentage increase in its length is:

Question

If a force is applied to an elastic wire of the material of Poisson's ratio 0.2 there is a decrease of the cross-sectional area by 1 % . The percentage increase in its length is:, 1 %, 5 %, 2.5 %, 1.5 %

MARKS App · Accepted Answer

a = π r 2 ⇒ d A A = 2 d r r ⇒ d r r = 0.5 % Poisson's ratio as σ = - d r / r d l / l ⇒ d l l = 2.5 %

Search any question & find its solution

Looking for more such questions to practice?