Valerio, Luca, De centro gravitatis solidorum, 1604
page |< < of 283 > >|
1do EDF, altera ſolido ABC inſcripta. hac igitur abla­
ta ex ſolido AF, figura relinquetur ex reſiduis cylindro­
rum, vel cylindri portionum altitudine, & multitudine
æqualibus ijs cylindris, vel cylindri portionibus, ex quibus
conſtat alterutra figurarum ſolidis ABC, DEF circum­
ſcriptarum: eruntque ex ſuperius demonſtratis dicta reſi­
dua, & cylindri vel cylindri portiones, quæ circa ſolidum
EDF, inter ſe æqualia proutinter ſe reſpondent inter ea­
dem plana parallela, vt eſt exempli gratia reliquum ſoli­
di AN dempto ſolido SR, æquale ſolido TP: & ſic de­
inceps: ſummus autem XF cylindrus, vel portio cylindrica
170[Figure 170]
eſt communis: Atqui bina hæc iam dicta ſolida centrum
grauitatis habent commune communis bipartiti axis ſectio
nem in eadem recta linea BD, in qua eſt etiam ſolidi XF
communis centrum grauitatis.
duarum igitur dictarum figu
rarum ſolido EDF, & prædicto reſiduo circumſcriptarum
idem aliquod punctum in axe BD erit commune centrum
grauitatis: ſieri autem poteſts quod in ſecundo libro demon
ſtrauimus, vt duæ dictæ figuræ ſuperent vnaquæ que ſibi in­
ſcriptam minori ſpacio quantacumque magnitudine pro­
poſita.
ex demonſtratis igitur in primo libro; duo ſolida cir­
ca axem BD in alteram partem deficientia commune ha­
bebunt in axe BD centrum grauitatis: ſed ſolidi, ideſt co-

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