Replace the three forces acting on the plate by a wrench $($Figure $1).$

Suppose that $F_A=\{-56i\}lb,F_B=\{-42j\}lb,$ and

$F_C=\{28k\}ll$

Determine the magnitude of the resultant force.

Express your answer in pounds to three significant figures.

$F_R=75\mathrm{.}4lb$

Previous Answers

Correct

Part B

Determine the resultant couple moment.

Express your answer in pound$-$feet to three significant figures. Enter positive value if $M_R$ has the same direction as $F_R$ and negative value if $M_R$ is opposite

to $F_R.$

Part C

Determine the coordinates of the point $P(x,y)$ where the force's line of action intersects the plate.

Express the $x$ and $y$ coordinates in feet to three significant figures separated by a comma.