Stevin, Simon
,
Mathematicorum hypomnematum... : T. 4: De Statica : cum appendice et additamentis
,
1605
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*DE* S*TATICÆ ELEMENTIS*.
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bafin parallelo, fueritq́ue firmitudinis punctum in ſecan-
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te plano, infra gravitatis centrum: </
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ctu) ſeſe invertit donec gravitatis centrum in pendulâ gra-
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vitatis diametro ſit.</
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<
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xml:space
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xml:space
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">A B C D columna eſto, per gravitatis centrum E ſecta, plano
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FG ad baſin A D parallelo, G autem fir-
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mitudinis punctum infra gravitatis cen-
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trum E, quo faſtigio H incumbit, & </
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<
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quieſcit, I K porro axis horizonti L M pa-
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rallelus. </
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<
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<
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xml:space
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">Columnam in-
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vertere ſe probandum eſt, uſque dum gra-
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vitatis centrum in pendulâ gravitatis dia-
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metro fuerit. </
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<
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xml:space
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">Sed naturæ, ut dixi, ductu
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nutuq́;</
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<
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xml:space
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repoteſt.</
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xml:space
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<
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<
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xml:space
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">Syllogiſmi hujus aſſumptio inde manifeſta eſt, quòd punctum non ſit ma-
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gnitudo, ideo neque ſolum. </
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<
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xml:space
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">Verum quidem eſt, fingere nos ali quando corpus
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ex hypotheſi ita quieſcere, ſed re verâ effectum illud reddere hominum nemo
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poteſt. </
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</
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">columnatamen ( puncto G immoto) in illud latus ſeſe invertet à quo motus
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principium exſtiterit. </
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gravitatis centrum in pendulam gravitatis diametrum incidat, è 6 propoſitio-
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ne manifeſtum eſt. </
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hoc reſponſum à nobis ferat. </
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xml:space
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vel in propinquo puncti in quo quieſcit; </
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">ſin gravitatis centrum ſurſum eſt jacere, ſtare,
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ſedere existimamus. </
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exporrigit, ſtare quando horizonti perpendiculare eſt, hinc illud eſt quod cubum (quia
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latera habet æqualia) tam ſtare quam jacere, tam{q́ue} jacere quam ſtare propriè dici-
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mus. </
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e
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x ligno, aliáve quâlibet materiâ æquabiliter & </
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& </
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foramen, & </
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I, item ſupra I in K, denique infra in L. </
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32
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acu in K inſertâ, ut liberè moveri poßit, diame-
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trum H F, nunquã non horizonti parallelam mu-
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nere; </
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ſitum dederis ſervare, denique in L inditâ, omnia
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@@ illud latus inverti, unde primum motus incipit, donec I in gravitatis ſuæ </
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