The apprentice, or First book for mechanics, machinists, and engineers (1860)
Byrne, Oliver · New York, P. J. Cozans · leaf 132
— sin. 21° X 2 = .716 ; p F z= 20 — .716 = 19.284 ; 0 F = 4.716 ; P = 100 ; W= 80 ; .•. 100 X 19.284 = Q X 4.716 + 80 X .716 .•. Q = 396.7 lbs. Ques, 41. Let the pressures P and Q be inclined to tlielever, then produce them till they intersect at C, and jointhe points C and 0 ; now the resultant of… … Let this circle intersect the circumference of the axis atthe point T, join T and C ; then on the line C P take offa space 0 n, equal to the units in the pressure P, and con-struct the parallelogram of pressures C n m t, then theunits in C ^ will give the pressure of Q, when the motion isupon the…
Mechanics, Applied
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![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-359-250.webp)
