A text book of elementary mechanics, for the use of colleges and schools (1881)
Dana, Edward Salisbury, 1849-1935 · New York, J. Wiley & sons · leaf 220
Fig. 135. always acts vertically (Fig. 135) and turns the leverfrom the position AB to that of AB\ then the effective 190.] LEVEE. 201 distance through which it acts is AC (~ s), and theheight through which the weight is raised is BD (= h).Therefore P^ ITD _ ITF BF W ZZ AC ZZ AF ~ AF; .-. P.AF =… … Fig. 136. while it turns from the position AB to A SB. Here thepower acts through the arc A A (= s), and the resist-ance is overcome through the distance of the arc BB(= d). Hence P_ B& BF, R z:z AA Z:Z AF; .% P.AF = R.BF. In general, the relation may be obtained after the samemanner, whatever…
Mechanics
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