http://imgur.com/NMu80 http://imgur.com/NMu80 Hello! I have a problem to solve and im not quite sure how to. In the linked image i have the values of G, F and D given. F stays constant and right angled towards the lever. The bucket needs to go up 9 meters in 4 seconds. What is the smallest x can be for this to happen? I know how to find x if the system was standing still, or at constant speed. But it needs to move the bucket up 9 meters in 4 seconds. Since the only thing i can change is x i presume that the extra moment given by extra length of x, correlates to the speed it needs to have? Or can i look at this as a constant speed problem by saying that from the start of the movement, there was an average speed of 2.25 m/s? Which then would mean that the length of x is equal to what it would be if the system was standing still. As in G*(D/2)-F*x=0 if using the center of the disc as the moment point. Im confused. Can i solve this simply through equilibrium analyzes or do i have to involve angular momentum or something like that? Sry if my english isnt the best. Its not my native language.