Steel-yard Used as a Lever
Illustration of an ordinary steel-yard being used as a lever. F represents the fulcrum. Weight P is used to balance weight W.
Keywordslever, fulcrum, scale, weight, balance, levers, force, weights, ratio, proportions, ratios, proportion problems
Claude Irwin Palmer Practical Mathematics for Home Study (New York, NY: McGraw-Hill Book Company, Inc., 1919)