Introductory course of natural philosophy for the use of schools and academies. Ed. from Ganot's popular physics. By William G. Peck (1869)
Ganot, Adolphe, 1804-1887, Peck, William Guy, 1820-1892 · New York A.S. Barnes · leaf 37
form. For example, by the aid of a lever, about to bedescribed, a man may raise a weight which he could not otherwiseovercome. The Lever. 30. A Lever is an inflexible bar free to turn about afixed point, called the Fulcrum, and acted upon by twoforces which tend to turn it in opposite directions.… … Fie 15. Lever of the first class.—In this class the fulcrum is be-tween the power and the resistance. Such a lever is repre-sented in Fig. 15. The hand is the power, the weight P isthe resistance, and the fixed point C is the fulcrum. Examples. What is the advantage of Machines t Example. ( 30.)…
Physics
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