57.—Second Pulley System. details |
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![[image]](http://www.fromoldbooks.org/Lodge-ElementaryMechanics/pages/57-second-pulley-system/57-second-pulley-system-q98-251x689.jpg "[image]") | ||
| Image title: | 57.—Second Pulley System. | |
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| Source: | Lodge, Oliver J.: “Elementary Mechanics, Including Hydrostatics and Pneumatics. Revised edition” (1882) | |
| Place shown: | none | |
| Keywords: | pulleys, machinery, diagrams, greyscale | |
| Status: | public domain in the USA, out of copyright in Canada, hence royalty-free stock image for all purposes and no usage credit required | |
Notes: |
The only system of pulleys frequently employed for hoisting is what is called the second system, where there are two blocks of pulleys, one attached to the weight, and the other to the beam; and where the same rope passes round all (fig. 57). The mechanical advantage in this case is simply equal to the number of strings supporting the weight: which in the figure happens to be four. (p. 138) |
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| Filename: | 57-second-pulley-system-q98-251x689.jpg | |
| Blog link: | http://www.fromoldbooks.org/Lodge-ElementaryMechanics/pages/57-second-pulley-system/57-second-pulley-system-q75-182x500.jpg | |
| Scanner dpi: | 1600 | |
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