Musschenbroek, Petrus van
,
Physicae experimentales, et geometricae de magnete, tuborum capillarium vitreorumque speculorum attractione, magnitudine terrae, cohaerentia corporum firmorum dissertationes: ut et ephemerides meteorologicae ultraiectinae
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CORPORUM FIRMORUM.
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ſeiſſumque ab eo ſegmentum D E C, quæritur pondus P penden-
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dum ex D, cujus momentum ſimul cum momento partis reliquæ
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A B E D ſit in eadem proportione ad Cohærentiam baſeos A B, quam
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integrum corpus A B C habet ad eandem Cohærentiam. </
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axis I K C, ſitque centrum gravitatis hujus corporis A B C in G,
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ſegmenti vero abſciſſi D E C in F: </
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">tum fiat, uti ſoliditas A B E D,
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ad ſoliditatem D E C, ita F G ad G H. </
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<
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">erit punctum H centrum
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gravitatis corporis A B E D: </
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">deinde ut I H ad I G, ita pondus inte-
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gri corporis A B C, ad pondus partis A B E D, una cum quodam
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pondere O: </
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">tandem ut K I ad H I, ita fiat pondus O ad pondus P,
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erit pondus P ſuſpenſum ex D, pondus quæſitum.</
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longitudinem I G, ut pondus corporis A B C ad pondus partis reli-
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quæ A B E D unà cum pondere O, ergo pondus A B C ſuſpenſum
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ex G habet idem momentum, quod pondus A B E D una cum pon-
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dere O ſuſpenſum ex H. </
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eadem proportione, in quâ I K eſt ad I H; </
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ex D habebit idem momentum, quod O ex H, additoque com-
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muni momento ponderis A B E D, erit momentum ponderis P, una
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cum momento ponderis A E, æquale momento ejusdem pon-
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deris A B E D, una cum momento ponderis O; </
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<
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æquale momento ponderis totius A B C, adeoque momentum pon-
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deris P, una cum momento partis reliquæ A B E D eſt ad Cohæren-
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tiam in eadem proportione, in qua momentum totius corporis
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A B C eſt ad eandem Cohærentiam.</
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æquales baſes E F, A B, ſed diverſas longitudines E H, A D ha-
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bentibus, ex eadem materia confectis, datoque pondere P, cujus
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momentum ſimul cum momento gravitatis E F G H, ſit ad Cohæ-
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rentiam in qualibet ratione, invenire pondus O ex D ſuſpenden-
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dum, cujus momentum ſimul cum ponderis momento in A B C D, ſit
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ad Cohærentiam in eadem ratione.</
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baſeos c.</
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