Worksheet, 4.7-4.8 *4-112. The belt passing over the pulley is subjected to two forces F, and F2. each having a magnitude of 40 N. F, acts in the -k direction. Replace these forces by an equivalent force and couple moment at point A. Express the result in Cartesian vector form. Take 0 = 45%. r = 80 mm 300 mm F2 Ans. Replace the three forces acting on the shaft by a single resultant force. Specify where the force acts, measured from end A. 12 500 lb 200 1b 260 lb