(સ્ટીલનો યંગ ગુણાંક $=2 \times 10^{11}\,Nm ^{-2}$, રેખીય પ્રસરણાંક $=10^{-5}\, K ^{-1}$ આપેલા છે.)
\(\text { Stress }=Y \times \frac{\Delta \ell}{\ell}\)
\(= Y \times \frac{\ell \alpha \Delta T }{\ell}= Y \alpha \Delta T\)
\(\text { Compressive Tension }=\text { Stress } \times \text { Area of cross section }\)
\(= YA \alpha \Delta T =4 \times 10^4\,N\)
$(\alpha = {10^{ - 5}}/^\circ C$ and $Y = {10^{11}}\,N/{m^2})$