Stevin, Simon
,
Mathematicorum hypomnematum... : T. 4: De Statica : cum appendice et additamentis
,
1605
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*DE STATICÆ ELEMENTIS.*
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<
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xml:space
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gmatias habent, ita etiam *STATICAE*, de columna enim ſegmentum deſe-
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cari poſſet, cujus ratio ad totam eſſepoſſet,
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quæ eſt 2 ad 3. </
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manente quævis alia materia contra illam
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ponderari poſſet, indeq́ue {1/3} auferri, verum
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Staticè illud ipſum efficere volumus, hoc
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pacto.</
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pro toto datorum terminorum 2 & </
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<
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H, I, K, L, M æqualiter ſpacio inter ſe diſſi-
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ta, ſignanda erunt, & </
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">in ſecundo puncto I (à ſecundo puncto inquam, quia
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2 datorum numerorum alter eſt) columna è pendulâ gravitatis diametro I N
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ſuſpendenda, necnon ex quinto puncto M aliquod pondus demittendum,
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ut O tantæ gravitatis, ut omnia in ſitus æquilibritate pendeant. </
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<
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O eâ eſſe in rationead columnæ pondus, in qua eſt 2 ad 3, aut O æquare {2/3} co-
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lumnæ.</
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">G gravitatis centrum eſt columnæ A B C D, M P vero pendula gravi-
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tatis diametros ipſius O, propterea ut radius I G ad radium I M: </
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lumnam per primam propoſitionem. </
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quam 2 ad 3, ergo & </
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nobis fuit demonſtrandum.</
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<
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rum.</
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poſſemus, niſi ex antecedentibus manifeſta eſſent, etiam ex iis, quæ de incom-
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menſurabilibus magnitudinibus alibi præcepimus.</
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baſin parallelo ſectâ, firmitudinis autem puncto ſupra
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gravitatis centrum fixo: </
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per gravitatis centrum à plano F G ad
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baſin A D parallelo ſecta, H autem
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firmitudinis punctum in pendulâ gra-
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vitatis diametro I G fixum, ſupra gra-
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vitatis centrum E. </
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denique horizon.</
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<
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rizontem M N parallelum eſſe demon-
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ſtrari oportet.</
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