Properties Of Matter

A steel rod has a radius of \(20 \mathrm{~mm}\) and a length of \(2.0 \mathrm{~m}\). A force of \(62.8 ~\mathrm{kN}\) stretches it along its length. Young's modulus of steel is \(2.0 \times 10^{11} \mathrm{~N} / \mathrm{m}^{2}\). The longitudinal strain produced in the wire is _____________ \(\times 10^{-5}\)