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A string and pulley model for establishing the least-cost location. Weights are used to represent the amounts of raw materials needed to make one unit of production. A weight is also used for the finished product. The weights are suspended below their point of origin on the strings and all the strings are tied together in the centre. The point of least costs will be the point at which the central knot stops.
A Varignon frame is a system of weights and pulleys used by geographers to help determine optimum location. For example, the weights might represent the relative cost of transporting particular goods to or from particular locations, to help a firm decide the most cost effective site to locate a prospective production facility.
In this drawing of a Varignon frame, the weights are represented as orange cubes. The blue plane could be a map, and the point where all the "strings" meet would indicate the optimum location.
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Copyrights:
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 | Geography Dictionary. A Dictionary of Geography. Copyright © Susan Mayhew 1992, 1997, 2004. All rights reserved. Read more |
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| Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Varignon frame". Read more |
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