HELP PLEASE WITH THE RIGHT SIGNIFICANT FIGURES

Part A $-$ Finding the equivalent force on a Warren truss

The object in the diagram below is called a Warren truss. $($Figure $1)$For the system of parallel forces $F_1=690N,F_2=1520N,$ and $F_3=2680N,$ determine the equivalent resultant force of the system by finding both the magnitude of the force and the distance from point A where the force needs to be applied.

Express your answers, separated by a comma, to three significant figures.

View Available Hint$($s$)$

$F_R,d=$

$N,m$

Part B $-$ Analyzing the force$-$couple system on a bracket

For the bracket shown below, $F_1=144lb,F_2=48lb,$ and $M=520lb*ft.($Figure $2)$Replace this force and couple system with an equivalent force by specifying the magnitude of the force, the direction in which the force acts, and where the force's line of action intersects member $AB$ as measured from $A.$

Express your answers, separated by commas, to three significant digits. The angle should be measured counterclockwise from the positive $x$ axis $($parallel to segment CB$).$

View Available Hint$($s$)$

$F_R,{}_R,d=$

$lb,,ft$

Part C Complete previous part$($s$)$