Physics - Elasticity Question with Solution | TestHub

Two blocks of mass $2 \mathrm{kg}$ and $4 \mathrm{kg}$ are connected by a metal wire going over a smooth pulley as shown in figure. The radius of wire is $4.0\times {10}^{-5} \mathrm{m}$ and Young's modulus of the metal is $2.0\times {10}^{11} \mathrm{N} {\mathrm{m}}^{-2}$. The longitudinal strain developed in the wire is $\frac{1}{\alpha \pi }$. The value of $\alpha$ is _____. [Use $g=10 \mathrm{m} {\mathrm{s}}^{-2}$)