일반물리학 1 — Temperature, Heat, and the First Law of Thermodynamics: Problem 13

13 As a result of a temperature rise of $64\text{ C}^\circ$, a bar with a crack at its center buckles upward (Fig. 18-29). The fixed distance $L_0$ is $3.77\text{ m}$ and the coefficient of linear expansion of the bar is $25 \times 10^{-6}/\text{C}^\circ$. Find the rise $x$ of the center.