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

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1461465 L*IBER* S*TATICÆ*
Inſeratur igitur ſolidum P in lancem
M
, ut in ſecunda figura, lanciq́ue O im-
ponatur
pondus Q 10 ;
jam fundum
M
tam validè impingetin corpus P quàm
à
10 impelletur.
ſit autĕ corpus P deci-
ma
parte minus quam M, ut vacuus inter
utrumque
locus 1 aquæ expleatur, hoc
eſtaquea
mole æquante corpus E A B.
Itaque 1 aquæ in lancem infuſa hanc
deprimet
, reliquamq́ue attollet, id ipſum teſtante experientia, &
10 propoſi-
tionis
demonſtratione approbante.
Quare 1 aquæ in lance M iſtic tantæ erit
potentiæ
, quàm 10 plumbiferrivé aut alterius materiæ ſolidæ eidem lanci M
affixæ
.
Atque eadem ratione 1 aquæ, hujuſmodi partium diſpoſitione ma-
joris
erit efficaciæ, quam millæ libræ materiæ alterius.
Quæ cum ita ſint, aqua
quæ
inter utriuſque fundum, corporis P lancisq́ue M interceſſit, fundum M
nunc
tam validè preſſat ac prius fun dum corporis P, hoc eſt, ac 10 ;
cùm pon-
206[Figure 206] dus Q 10 in reliqua lance O immiſſum ſit.
Itemq́ue contra aqua tanta vehementia premit
fundum
lancis M, quanta eſt efficientia 10
Q
.
ponamus autem aquam in fundo M æqua-
riipſi
K L B A, reliquam autem ipſi P circum-
fuſam
, reliquæ I E.
Quare aqua E A B tam
potenter
preſiat fundum A B, quàm hæc aqua
fundum
M, ideoq́ue E A B premit ſuum fun-
dum
A B æquivalenter 10 , ſed tantus eſt
item
preſius aquæ G C D contra fundum
C
D.
Quamobrem, quod pragmaticè con-
firmare
ſtatueramus, aqua E A B pondere 1
ſuum
fundum A B æquè validè premit, atque
G
C D 10 fundum C D.
Pari ratione evin-
ces
, vel 1 preſſare potentiùs mille libris.

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