An open$-$end wrench applies the forces $\backslash ($ F $\backslash )$ to the head of a bolt to produce the moment $\backslash ($ M $\backslash ),$ where each force $\backslash ($ F $\backslash )$ is normal to the surface on which it acts. Determine $\backslash ($ M $\backslash )$ if $\backslash ($ F$=420\backslash$mathrm$\{$lb$\}\backslash ).($Round the final answer to four decimal places.$)$

The moment due to the applied force is

in$.$llb$.$