Replace the loading on the frame by a single resultant force. Suppose that

$F_1=400N,F_2=600N,F_3=850N,$ and $F_4=250N.($Figure $1)$

Determine the magnitude of the resultant force.

Express your answer to three significant figures and include the appropriate units.

$F_R=$

Part B

Determine the angle between the resultant force and the $x$ axis.

Express your answer using three significant figures.

$A$

@$,$ measured clockwise

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Part C

Specify where its line of action intersects a vertical line along member $AB,$ measured from $A.$

Express your answer to three significant figures and include the appropriate units. Enter positive value if the line of action intersects a vertical line $AB$ above point A and negative value if the line of action

intersects a vertical line $AB$ below point $A.$

Figure