A glider is attached to a bathtub full of cement via a double pulley system, (the bath tub is hanging over a cliff). Assume the glider rests on a freely rolling cart. I wasn't sure of exactly how a double pulley works. The picture shows the one where the Glider is attached through the outer radius, and the other is where the Glider is attached through the inner radius. The outer radius is twice as big as the inner one. I figure that the goal of this problem is to get the maximum speed of the glider after the tub falls 60 ft. (The tub weighs twice as much as the glider). I'm just not sure what equations relate to a double pulley system. I know one system will pull pull the glider 2 times as much and the other 1/2 as much, but I can't think of which is which. Any help on this would be great, thanks.