Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 446
ance, and ful-crum, must be in thesame. If the result-ant pass through thefulcrum, its momenttaken in referencethereto must be zero,which requires thatthe moment of thepower shall be equalto that of the resist-ance. That is, when a lever A B is in equilibrio and solicited by the power F moment of… … power, resistance,and fulcrum insame plane; F X Om = Q X On. If the lever turn upon trunnions, then will the moment of when lever isthe power F, be equal to that of the resistance increased trunnions-°nby the moment of the friction on the trunnion. Designa-ting the radius of the latter by r, then…
Mechanics · Acoustics · Optics
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