DelMonte, Guidubaldo
,
Mechanicorvm Liber
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æqualis eſt angulo CDA, cùm à ſemidiametris, eademq; circumfe
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rentia contineantur; & angulus C
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L
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S angulo CDS eſt minor;
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erit reliquus
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S
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LD reliquo SDA maior. </
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">quare circumferentia
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DA, hoc eſt deſcenſus ponderis in D propior erit motui natu
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rali ponderis in D ſoluti, lineæ ſcilicet DS, quàm circumferen
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tia LD lineæ LS. </
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<
s
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id.2.1.17.5.1.19.0.a
">minus igitur linea CD ponderi in D reniti
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tur, quàm linea CL ponderi in L. </
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id.2.1.17.5.1.19.0.b
">linea ideo CD minus ſuſtinet,
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quàm CL; ponduſq; magis liberum erit in D, quàm in L:
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cùm pondus naturaliter magis per DA moueatur, quàm per LD.
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</
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<
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N10E2F
">quare grauius erit in D, quàm in L. </
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<
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N10E31
">ſimiliter oſtendemus CA
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minus ſuſtinere, quàm CD: ponduſq; magis in A, quàm in D li
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berum, grauiuſq, eſſe. </
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s
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id.2.1.17.5.1.20.0
">Ex parte deinde inferiori ob eaſdem cauſas,
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quò pondus propius fuerit ipſi G, magis detinebitur, vt in H ma
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gis à linea CH, quàm in K à linea CK. </
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<
s
id
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N10E3E
">nam cùm angulus CHS
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maior ſit angulo CkS, ad rectitudinem magis appropinquabunt
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arrow.to.target
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note34
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ſe ſe lineæ CH HS, quàm Ck kS; atq; ob id pondus magis deti
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nebitur à CH, quàm à Ck ſi enim CH HS in vnam conuenirent
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lineam vt euenit pondere exiſtente in G; tunc linea CG totum ſu
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ſtineret' pondus in G, ita vt immobilis perſiſteret. </
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<
s
id
="
id.2.1.17.5.1.21.0
">quò igitur
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minor erit angulus linea CH, & deſcenſu ponderis ſoluti, ſcilicet
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HS contentus, eò minus quoq; eiuſmodi linea pondus detinebit. </
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id.2.1.17.5.1.22.0
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& vbi minus detinebitur, ibi magis liberum, grauiuſq; exiſtet. </
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id.2.1.17.5.1.23.0
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Præterea ſi pondus in k liberum eſſet, atq; ſolutum, per lineam
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k S moueretur; à linea verò Ck prohibetur, quæ cogit pondus
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citrà lineam k S per circumferentiam k H moueri. </
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id
="
id.2.1.17.5.1.24.0
">ipſum enim
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quodammodo retrahit, retrahendoq; ſuſtinet. </
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>
<
s
id
="
id.2.1.17.5.1.25.0
">niſi enim ſuſtineret. </
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id
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id.2.1.17.5.1.26.0
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pondus deorſum per rectam k S moueretur, non autem per cir
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cumferentiam k H. </
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<
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N10E6E
">ſimiliter CH pondus retinet, cùm per circum
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<
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ferentiã
">ferentiam</
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HG moueri compellat. </
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id.2.1.17.5.1.27.0
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Quoniã
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autem angulus CHS ma
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ior eſt angulo CKS,
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dẽptis
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æqualibus angulis CHG CkH; erit
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reliquus SHG reliquo SKH maior. </
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<
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id
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id.2.1.17.5.1.28.0
">circumferentia igitur k H, hoc
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eſt deſcenſus ponderis in k, propior erit motui naturali ponderis in
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k ſoluti, hoc eſt lineæ k S, quàm circumferentia HG lineæ HS. </
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>
<
s
id
="
N10E8A
">mi
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nus idcirco detinet linea Ck, quàm CH: cùm pondus naturali
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ter magis moueatur per k H, quàm per HG. </
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<
s
id
="
id.2.1.17.5.1.28.0.a
">ſimili ratione oſten
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detur, quò minor erit angulus SkH, lineam Ck minus ſuſtinere. </
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id.2.1.17.5.1.29.0
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