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# Title: [Physica, Id Est, Scientia Rerum Corporearum, In Decem Tractatus Distributa] Physica, Id Est, Scientia Rervm Corporearvm, In Decem Tractatvs Distribvta (shelfmarks Leibn. Marg. 7:3-4; ZEN Leibn. Marg. 7:3-4)
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LIB. II. DE FLEMENFES.
paltuum geometricorum, tota peri-
Pheria continet 27600000. paltus
geometricos; porro ex peripheria
cognita, cognolcitur, radius, lci-
licet Phylice; _ E radium ducas
in lemipliariam, habebis aream cir-
culi; et l hanc quadeuplices, totam
datae Cphaerae luperficiem habebis:
sed haec in colmographia ex protes-
Co tractabimus.
PROP. CZCTTI.
Si terra verimque per centrum esset
perforata, e lapis per foramen de
mitteretur, definiri potest quid fieret.
Primo delcenderet motu natura
liter accelerato, vique ad CCHFTUI,
ve patet.
Secundo in centro catim nOn
quielceret, cum tanta vi impetus ac-
quilici;igitur vltra cenderet, per Cam-
dem lineam; hoc est a(cenderet mo-
cu retardato.
Tertio, tantus impetus coneurre-
ret ad alcensum, quantus ad delcen-
Cum; nempe impetus quidem inna-
cus concurreret ad descenlum, nOn
vero ad ascentum, ac impetus vici-
mo delcenlus instanti, acquilius,
non concurrerer ad delcenlum, quia
post ulcimum instans descensus, nul-
Insamplius delcesus est. sed ad alcen-
sum reliqui omnescum ad descelum,
cum ad alcensum concurruME; primus
autem de ultimus in perpendiculo
acquilicus aquales lunt;igitmr tantus
ad descensum, quantus ad alcensum
concurrit: praeterea re acquiritur in
delcensu vniformiter, ita rniformi-
ter in alcensu deperdicui.
Ouarto hinc descensus e alcen-
sus per se aeguales sunt; hinc ad eam.
dem alticudinem lapis alcenderet, ex
qua prius delcendisset, per le; dico
per le: quia per accidens, PTOPTCE
relistentiam, vel aëris, vel aliorum
corpulculorum acensus aequalis non
ellet desconsui, sed minor.
Dices, in vibrationibus funepen-
duli, ascentus minor est descensu, ve
octenlum est, in l. 6. tract. de motu.
igitur in vibrationibus lapidis de-
missi per praedictum Foramen idem
acciderct.
Respondeo, negando paritatem;
quia in ribrationibus funependuli
tancus impetus ad alcensum quancus
ad de(CeM (UIM NOn CONCUEEIE; CUIM
enim ipetus innacus omiu aC-
quilicorum pertectistimus concurrat
ad delcensum, non ad alcen(um, EC
vltimus aequisicus omnium imperte
etissimus, concurear ad alcentum.
non ad delcensum; reliqui vero om-
nes ad aCcensum (imul d delcenli;
CCFEC FantuS non conCurrit ad 2FCCH-
sum, quantus ad descensum; vide
( vis lib. cicatum.
Ouinto, esset fere motus perpe-
tuus, xcernaque per se vibrationum
serieshinc aliguando, Deo dante, ex
iildem principiis, motum illum, quo
planeta, verbi gratia, (ol ab apogao.
ad perigaum, ex ricissim, ab h00
ad illum cendie motumque declina-
tionis ab rnoeropico ad alium, ex-
plicabo: vide sistract. de moru l. 5.
P. 78.
copolios  Cllalu volcllo ldde
ie non pollee, nec humores propria
gravitate in partes extremas irent,
led verlus praecordia, id est, verlus
centrum gravicacis, led haec lunt ta-
PROP
CXCIV
S TTomo esset in centro mundi:
facile in orbem moneri posset: Ecili-
cet circa centrum grauitatis proprii
c altao