A block of weight W= 35.0N sits on a frictionless inclined plane, which makes an angle 0= 22.0 with respect to the horizontal, as shown in the figure. A force of magnitude F= 13.1N , applied parallel to the incline, is just sufficient to pull the block up the plane at constant speed.What is Wg , the work done on the block by the force of gravity as the block moves a distance L = 4.40m up the incline?