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Lever and Fulcrum
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Description: Illustration of a lever with fulcrum F. W represents the weight lifted, P is the force that does the lifting, D is the distance from the fulcrum to the point of application of the force, and d is the distance from the fulcrum to the point where the weight is attached. In all possible relations of the fulcrum, weight, and force the following proportion holds: P:W = d:D.
Source: Claude Irwin Palmer Practical Mathematics for Home Study (New York: McGraw-Hill Book Company, Inc., 1919) 91
Keywords: proportion problems, proportions, ratio, ratios, lever, levers, fulcrum, force
Copyright: 2009, Florida Center for Instructional Technology. See license.
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