Philosophical instructor, or, Webster's elements of natural philosophy : subdivided into principles and illustrations ; intended for academies, medical schools, and the popular class-room (1824)
Eaton, Amos, 1776-1842, Webster, John, fl. 1804-1824 · Albany : Printed by Websters and Skinners ... · leaf 52
as been greatly lessened by an inventionof Smeaton, who makes the rope that sustains thepower proceed from the middle sheave in the block,by which means the power acts upon all the sheavesin the same parallel direction. INCLINED PLANE. 49 Inclined Plane. The power applied for raising a weight upon… … which passes over the pulley e be fastened to the axis of a cylinder of three pounds weight at d ; one pound suspended at the opposite end of the cord f will equipoise the three pounds at d, and the two powers will be at rest. Thus the relative gravity, or the descending powerof d, is in the same…
Physics
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