Casati, Paolo
,
Terra machinis mota : dissertationes geometricae, mechanicae physicae hydrostaticae
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tur rotæ B circumduceretur funis pedum
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250, nec diſpari argumentatione conficitur
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rotam tertiam C exigere funem pedum
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1250, quartam D 6250, quintam demùm
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E 31250: ex quibus conflatur ſumma pe
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dum 39060, quæ eſſet totius funis longitu
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do. </
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>Liceat autem hìc diſſimulanter præte
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rire immodicam rotarum E, D, & C craſſi
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tudinem, vt tàm longus funis earum am
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bitûs terminis contineri poſſet. </
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<
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>Nam ſi mul
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tiplici ſpirarum ſerie ita duceretur funis, vt
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ipſe ſe circumplecteretur, motuum Ratio
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nes, &, quod inde conſequitur, potentiæ mo
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menta, ipsâ euolutione mutarentur, auctis
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ſcilicet aut diminutis ex ſubiectâ ſpirarum ſe
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rie rotarum ac cylindorum diametris. </
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VII
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Difficultati
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ex funis lon
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gitudine.
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Gal.
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Hæc eadem, quæ nunc obijcis, mi
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hi pariter aliquandò non nihil fecere negotij. </
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Et primùm quidem earum rotularum, qua
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rum velocior eſt motus, funes quoquè gra
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ciliores eſſe debere obſeruabam, quippe qui
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bus ponderis grauitas minùs reluctetur. </
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<
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verò ſatis commodâ conſecutione conficie
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bam fieri poſſe, vt exiguis ſpatijs tanta funi
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culi longitudo citrà incommodum compre
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henderetur. </
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<
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>Deinde quamuis non adeò lon
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gus ſuppeteret funiculus, operæ pretium vi
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debatur futurum, ſi illo euoluto rotas ſi</
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