Solution

A copper wire of length $3$ metres and cross-sectional area of $1 \times 10^{-4}\,\mathrm{m^{2}}$ is subjected to a force of $500\,\mathrm{N}$. Calculate the stress and strain produced in the wire. (Young's modulus of copper $Y = 1.1 \times 10^{11}\,\mathrm{N/m^{2}}$)