DelMonte, Guidubaldo, Mechanicorvm Liber

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1247[Figure 247]
Sit datum A centum; ſit planum horizonti inclinatum CD in
angulo DCE.
inueniatur ex eadem nona Pappi quanta vi pondus
A ſuper CD mouetur; quæ ſit decem.
exponatur cochlea LM
helices habens GHIK &c. in angulo ECD; per ea, quæ dicta
ſunt, potentia decem pondus A ſuper helices GHIk mouebit.
ſi
autem hac cochlea volumus pondus A mouere, & potentia mo­
uens ſit vt duo.
ducatur NP axi cochleæ perpendicularis, axem
ſecans in O; fiatq; PO ad ON, vt vnum ad quinq; hoc eſt duo ad
decem.
Quoniam enim potentia mouens pondus A in P, ideſt
ſuper helices eſt vt decem, cui potentiæ reſiſtit, & æqualis eſt po
tentia in N vt duo; eſt enim NP vectis, cuius fulcimentum eſt
O.
potentia ergo vt duo in N pondus A ſuper helices cochleæ
mouebit.
efficiantur igitur ſcytalæ, ſiue manubria, quæ vſq; ad N

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