Machinists' and draftsmen's handbook, containing tables, rules and formulas, with numerous examples explaining the principles of mathematics and mechanics as applied to the mechanical trades; intended as a reference book for all interested in mechanical work (1910)
Lobben, Peder, 1858- · New York, D. Van Nostrand company · leaf 326
se, for instance, that a man exerted a force of 100pounds on the hauling part, and that it required 250 poundsof force to move the car; if he used the pulley blocks asshown at A, his work would be useless, as far as moving the caris concerned, as he could not do it, but turning his blocks endfor… … Friction in Pulley Blocks. In practical work, friction will have some influence, and, toa certain extent, change these results, because some of the ten-sion in the rope is lost by friction in each sheave the rope passesover, therefore the tension in each following part of the rope isalways less…
Mechanical engineering
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