Finding the Right Weight for the Lever 21) If 50 pounds were placed on a lever, 3 feet to the left of the fulcrum, how much weight would have to be placed at 5 feet to the right of the fulcrum to have an even balance? Using the lever formula makes figuring problems of this nature very simple. When we think of a lever, we might think of a teeter-totter on which if weight were placed just right, by scooting up or scooting back, there could be an even balance -- regardless of how different the two people were in weight.. Here's the formula: weight * distance = distance * weight e.g. 100 * 6 = 10 * 60 This means that on our lever we have 100 pounds that is 6 feet from the fulcrum; and, on the other side, there is 60 pounds that is 10 feet from the fulcrum, for an even balance. The equation is true (600 = 600). With that in mind, let us answer the above question: 50 * 3 = 5 * x 150 = 5x 30 = x Therefore, to make the lever balance with 50 pounds on one side (3 feet from the fulcrum), we would have to place 30 pounds 5 feet from the fulcrum on the other side.