Physics - Heat & Thermo Question with Solution | TestHub

Use the simplified free-length arc model for a bimetal: centre lines are separated by strip thickness $t$ and have negligible additional elastic strain. For ${\alpha }_1>{\alpha }_2,R\simeq \frac{t}{\left[\left({\alpha }_1-{\alpha }_2\right)\Delta T\right]}$. Each strip is 0.20 mm thick; ${\alpha }_1=20\times 10^{-6}$ and ${\alpha }_2=10\times 10^{-6}{K}^{-1}$. Find radius in cm for a 100 K rise.