Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
ower the other half; for the pulley acts as a lever of the secondclass, whose arms are to each other as 1 is to 2 ; the point T being thefulcrum; TL, the long arm, or the leverage of the power; and thedistance from T to axis of pulley, the short arm, or leverage of theAveight. Now, as the long arm…
Physics · Astronomy
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