a 3 m long pole lies along the x-axis with one end at the origin. at the other end (point a), a rope is attached and guyed back to a point on the wall (point b), located at (0,1.2,-2) (in m). the tension in the rope is 2500 n. replace the force applied by the rope on the pole by an equivalent force couple system located at the origin. what is the y-component of the required force (in n)?