A hand book of general instruction for mechanics, containing useful rules and memoranda for practical men (1907)
Smith, Franklin Elijah, 1872- · New York, D. Van Nostrand company · leaf 273
which is locatedin the middle of the lever, and a force, or power, of 25pounds exerted at the point B would be sufficient toraise it. From this the following may be deduced. The nearer the weight is to the point A, or fulcrum,the less the power required at the point B to raise it. Example. What… … 120 X 36 Fig. 70 4320~3~ 1440 lb. pressure. To Find the Weight Rule. Multiply the power by its distance from thefulcrum and divide by the distance of the weight fromthe fulcrum. Example. What weight located 36 inches from thefulcrum will be counterbalanced by a force of 50 poundsacting 6 inches…
Mechanics · Arithmetic · Measurement
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