Inclined Plane

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“A force pushing a weight from C to D, only raises it through the perpendicular height, E D, by acting along the whole length of the plane, C D; and if the plane be twice as it is high, one pound at B, acting over the pulley, D, would balance two pounds at A, or any where on the plane; and so of all other quantities and proportions.” — Goodrich, 1844


S. G. Goodrich A Glance at the Physical Sciences (Boston: Bradbury, Soden, & Co., 1844) 91


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