Brechner, Claude H., 1887- [from old catalog] · Boston, New York [etc.] Allyn and Bacon · leaf 252
Figure 263.—The Inclined Plane. PULLEY 241 … another steps on 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…
Physics
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