Current Attempt in Progress

The simple mechanism shown in the figure can be calibrated to measure temperature change. Use dimensions of $a=22mm,b=86$ mm $,$ and $L_1=185mm.$ The coefficient of thermal expansion for member $(1)$ is $22\mathrm{.}0\frac{{10}^{-6}}{}C.$ Determine the horizontal displacement of pointer tip $D$ of the mechanism shown in response to a temperature increase of $44C.$ Assume that pointer $BCD$ is not affected significantly by temperature change. Enter a positive value if tip $D$ displaces to the right; enter a negative value if it displaces to the left.

$u_D=|,mm||$