Part B

Using the $9\mathrm{.}75$ in long wrench from Part A$,$ the bolt has now been unscrewed a length of $2\mathrm{.}40$ in $.($Figure $2)$ The force of $F=\{-48\mathrm{.}0i+5\mathrm{.}00j+8\mathrm{.}00k\}lb$ is still applied to the wrench at point $B.$ What is $M_x,$ the moment of force at point $O$ about the $x$ axis?

Express your answer numerically in pound$-$feet to three significant figures.

View Available Hint$($s$)$

$$

$M_x=b*ft$