Question:
The elastic limit of steel is $8 \times 10^{8} \mathrm{~N} / \mathrm{m}^{2}$ and it's Young's modulus $2 \times 10^{11} \mathrm{~N} / \mathrm{m}^{2}$. Find the maximum elongation of a halfmeter steel wire that can be given without exceeding the elastic limit.
Solution:
