Stevin, Simon, Mathematicorum hypomnematum... : T. 4: De Statica : cum appendice et additamentis, 1605

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34341 L*IBER* S*TATICÆ*
C*ONSECTARIUM*.
Vnde conſequitur. Si ratio ponderis in I quieſcentis, ad pondus H quære-
retur, ductis perpendicularibus K L, M N, ſecantibus E F axem in O, P, ra-
tionem G O ad G P fore quæſitam.
Vnde & iſtud deducitur, columnæ gra-
vitate cognitâ:
pondera quoque cognoſci quæ cuique puncto, ut H & I, in-
nituntur.
HACTENVS RECTORVM
PONDERVM GENERA DICTA SVNT; OBLI-
QVORVM PROPRIETATES DEINCEPS
deſcribendæ ſunt, quarum omnium genera-
lem veritatem tanquam fundamentum istud
theoremata complectitur.
11 THEOREMA. 19 PROPOSITIO.
Si triangulum planum horizonti eſt perpendiculare, ba-
ſis parallela, reliquis autem lateribus globi ſinguli addan-
11Intellige ſaco-
ma põdus eſſe
quod additur
ad æquipon-
dium faci@n-
dum. Cui an-
tiſacoma op-
poſuimus.
trum ad ſiniſtrum:
ita ſacoma globi ſiniſtri ad antiſacoma
globi dextri.
D*ATVM*. A B C triangulum eſto cujus planũ ad horizontem ſit rectum
baſis vero parallela.
additorq́ue lateri A B, quod ad B C eſt duplum, globus
D.
lateri vero B C globus E & ponde-
54[Figure 54] re &
magnitudine æqualis cum D.
Q*VAESITVM*. Demonſtrandũ no-
bis eſt, quemadmodum latus A B 2, ad
latus B C 1:
ita ſacoma globi E, ad an-
tiſacoma globi D.
P*RAEPARATIO*. Triangulũ A B C
quatuordecim globorum pondere &

magnitudine æqualium, quaſi coronâ
ut E, F, G, H, I, K, L, M, N, O, P, Q, R, D,
cunctum ſingamus, qui omnes lineâ per
cĕtro ipſorum, ut in illis moveri poſſint,
tranſeunte, colligati æquali inter ſeſpa-
cio diſtent, ut illorũ bini lateri B C, qua-
terni vero B A accommodentur, hoc eſt, quemadmodum linea ad lineam;
ita
globi ſint ad globos.
Inſuper in S, T, V tria ſint puncta immota ac ſixa, quæà
lineâ ſive globorum funiculo, cum movetur, raduntur, ac ſtringuntur:
duæq́
funiculi partes, quæ ſupra trianguli baſin, lateribus A B, B C ſint parallelæ,
ut, quando connexio illa ſeriesq́;
globorum adſcendit, deſcenditve, globi pes
crura A B, B C volui poſſint.

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