The belt passing over the pulley is subjected to two forces F1 and F2 , each having a magnitude of 40N . F1 acts in the direction -k. Replace these forces by an equivalent force and couple moment at point A. Express the result in Cartesian vector form. Take theta = 45 (deg). r=80mm, 300mm from A. a)Determine the magnitude of the resultant force. b)Determine the moment of the resultant forse about the point A.