Question

A brass of length 1m is heated throught a temperature rise of $50^\circ$C. Find thermal stress developed in the rod
$(\alpha = 2 \times 10^{-5} \ ^\circ\text{c}^{-1}, Y = 1 \times 10^{11} \text{ N/m}^2)$

Hint:

Notice that thermal stress ($Y\alpha\Delta T$) is independent of the initial length or cross-sectional area of the rod. It only depends on the material properties ($Y, \alpha$) and the temperature change.

Answer 1