Stevin, Simon
,
Mathematicorum hypomnematum... : T. 4: De Statica : cum appendice et additamentis
,
1605
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DE S*TATICÆ PRAXI.*
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tranſverſorum axium D, E, in rectâ B C, & </
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ſurſum vergat; </
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<
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">deinde tantum materiæ præponderantis è ſcapo, B C verſum
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auferto, donec ex agina F ſuſpenſus æquamentum nanciſcatur, ut tamen acies
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tranſverſi axis D (dempta agina F) diameter ſit gravitatis ſcapi A C. </
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<
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conſtitutis, ſcapoq́ue ex agina F ſuſpenſo, quemcunque dederis ſitum (dum
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tranſverſus axis D aciei ſuæ incumbet) perpetuò ſervabit. </
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deinde pondus unci H, & </
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libram, H unciam id eſt ipſius G ſextamdecimam partem valeat; </
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de I ut interſtitium inter ipſum & </
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6} rectæ
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D E obtineat, atque idem intervallum D E inter utroſque tranſverſos axes in-
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termedium, initio ab I facto verſus A toties iterabis quoties commode de-
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ſcribi poſſe animadvertes, ut in punctis K, L, M, N, O, P, Q, R, quæ ſingula
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rurſum in tot æquales particulas ſubdividantur, quot ipſorum longitudo per-
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mittet, duas, quatuor, octo ſedecim, atque ſtateræ fabrica fuerit perfecta.</
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<
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<
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">monuimus) quam poterit fieri accuratiſſime omnia referantur, atque aciem
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axis tranſverſi D potius pauxillum ſupra rectam A C attollito quàm deprimas.</
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<
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bre ex unico H dependeat, iſtud ipſum fuerit 5 librarum, ſi præterea unaquæq;
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<
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">rectarum I K, K L, L M, in ſedecim particulas tributa eſſet quælibet particula
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unciam adderet. </
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obtineto, tum pondus H 6 ℔ & </
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tera hæc (ſi pondus mobile altera parte depreſſa haud deorſum prolabi fingas)
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qualibet gravitate ſitu æquiponderante quemcunque dederisſitum conſervet,
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ob cauſas antecedente propoſitione de perfectiſſimæ libræ fabrica, expoſitas; </
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etiam hæc ſtatera fuerit perfectiſlima. </
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dens eſt. </
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ſtruximus.</
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