Brechner, Claude H., 1887- [from old catalog] · Boston, New York [etc.] Allyn and Bacon · leaf 252
n the movingstairway and is carried up, ordown, according to the directionin which the stairway moves.Usually there are two of these sideby side, one going up, and theother down. Graded roads are excellent ex-amples of inclined planes. 286. Pulley. — There are two types of pulleys266 and Figure… … Figure 265. — A Moving Stairway Is anInclined Plane. The larger the driven pulley is,the greater the mechanical ad-vantage.
Physics
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