Consider:

$F_1=278lb,F_2=299lb,F_3=229lb$

$=39,l=0\mathrm{.}6ft,a=9ft,c=7ft,d=4ft$

Answer the following question:

Calculate the magnitude of the resultant moment acting at $C,$ and put your

result $($with the correct sign$)$ in the cell below $($in $lb.$ft$).$ N$.$ Note that $C$ is

located at the bottom surface of the beam.