DelMonte, Guidubaldo
,
Mechanicorvm Liber
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re ſuſtineatur potentia, quàm ſit ipſum pondus;
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quod quidem trochleæ ſuperioris orbiculi non
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efficiunt. </
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<
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">Nouiſſe tamen oportet, quòd (vt fieri ſolet) inferioris tro
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chleæ orbiculus, cuius centrum N, minor eſſe debet eo, cuius cen
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trum C; hic autem minor adhuc eo, cuius centrum B; ac deniq;
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ſi plures fuerint orbiculi in trochlea inferiori ponderi alligata, ſem
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per cæteris maior eſſe debet, qui annexo ponderi eſt propinquior. </
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<
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oppoſito autem modo diſponendi ſunt in trochlea ſuperiori. </
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<
s
id
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id.2.1.159.3.1.3.0
">quod
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fieri conſueuit, ne funes inuicem complicentur; nam quantùm
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ad orbiculos attinet, ſiue magni fuerint, ſiue parui, nihil refert;
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cùm ſemper idem ſequatur. </
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<
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">Præterea notandum eſt, quod etiam ex dictis facilè patet, ſi
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funis, ſiue religetur in R trochleæ inferiori, ſiue in S, maximam
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indè oriri differentiam inter potentiam, & pondus: nam ſi relige
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tur in S, erit potentia in G ponderis ſubſexcupla. </
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<
s
id
="
id.2.1.159.4.1.2.0
">ſi verò in R,
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ſubſeptupla. </
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<
s
id
="
id.2.1.159.4.1.3.0
">quod trochleæ ſuperiori non contingit, quia ſiue
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religetur funis (vt in præcedenti figura) in T, ſiue in O; ſem
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per potentia in G ſubſexcupla erit ipſius ponderis. </
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<
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">Poſt hæc conſiderandum eſt, quonam modo vis moueat pon
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dus; necnon potentiæ mouentis, ponderiſq; moti ſpatium, atque
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tempus. </
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<
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">PROPOSITIO X. </
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<
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">Si funis orbiculo trochleæ ſurſum appenſæ
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fuerit circumuolutus, cuius altero extremo ſit al
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ligatum pondus; alteri autem mouens collocata
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ſit potentia: mouebit hæc vecte horizonti ſem
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per æquidiſtante. </
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