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 50
ed and a moving block have each of themthree sheaves, and a weight be sus-pended from the lower block, it willbe equipoised by a power equal to onesixth of the weight; for as the weightis supported by six lines from the threesheaves in each block, the weight isequally divided amongst them, in… … 48 THE PULLEY.
Physics
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