Guilelmi Oughtred ... Opuscula mathematica hactenus inedita / [William Oughtred].

  • William Oughtred
Date:
1677
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Licence: Public Domain Mark

Credit: Guilelmi Oughtred ... Opuscula mathematica hactenus inedita / [William Oughtred]. Source: Wellcome Collection.

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    - IM echanica, 43 At trochlea difpofita ut in fchem.. 2. |fi in FL dus effent potentie pondus P fu. |ftinentes, foret per 7, utraque fcorfim fub- | quadrupla ponderis: potentia autem in S dupla | elt utriufque potentie in F L feorfim: quare po- | tentia in 5 sqvalis eft potentiis in FL fimul |fumtis, Ergo potentia S eit ( 11 1) * pon: | deris P, ]tem fi S fit potentia movens erit fpatium | ponderis moti ad fpatium potentie müventis in | fimili ratione. Motus hic fic fit, Vectis BAC fulcimentum | elt C. potentia in B vel F, pondus in A : Ve- | Cis DEG fulcimentum in D, potentia in G | vel L pondus in E. Et quia potentie in FL | funt quales, vectis FL in neutram movebitur | partem, ideoque nec orbieulus circumvertetur , | fed tantum directe. afcendct, Prop. XXV. Si fingulis duarum trochlearum | orbiculis , quarum altera fuperne à potentia fu- | ftenta, altera inferne ponderi alligata fuerit, | circumducatur funiculus cujus utrumque extre- J mum alicubi furfum non quidem fuperiori tro- $ chlez religatur , Erit ratio potentie ad pondus E ficut numerus orbiculorum fuperioris trochlee | ad numerum orbiculorum inferioris, hoc eft, fi
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