Fred wants to raise a large rock onto a 3 m. high platform. He decides to put a 12 m long plank up onto the platform and slide the rock up the plank. Mechanical Advantage of Inclined Plane length of incline height of incline a. Draw a diagram & determine the mechanical advantage of the ramp. b. If he exerts a force of 500 N to move the rock up the ramp, what is the weight of the rock? (hint: force exerted x mechanical advantage = weight) c. If he pushes the rock up to the platform, how much work does he do? d. If it takes 25 seconds to do the work, how much power does it take?