In $($Figure $1),F_1=90lb$ and $F_2=40lb.$

Figure

Part A

Determine the resultant moment of the two forces about the a axis. Express the result as a Cartesian vector

Enter the components of the moment separated by commas. Express your answer in pound$-$feet to three significant figures.

$M_a=$

ilb$*ft,jlb*ft,klb*ft$

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