You have designed a system to raise and lower a ladder to your attic. A one piece cable is attached to the ladder AB at

point A. The mass of the ladder is 28 kg. Assume that the force due to the weight is applied at the center of the ladder as

shown. All other dimensional information is shown on the picture. Determine the following (neglect the radius of the

pulley and friction):

(a) Draw the free body diagram and write your assumptions.