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

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1515*DE* S*TATICÆ ELEMENTIS*.
1 Exemplum.
D*ATVM*. Pondus A ſuſpenſum è C libras tres, pondusalterum B ſuſpen-
ſum è D unam pendeat, denique CD jugum ſit.
Q*VAESITVM*. Anſa invenienda nobis eſt.
PRAGMATIA.
18[Figure 18]
CD ita dividitor, ut majus ſegmentum quod minoris
ponderis eſt pendulam diametrum verſus, illam rationem
habeat ad minus, quam majus pondus ad minus.
Sitq́ue
in E, ut quemadmodum 3 ℔ A, ad 1 ℔ B:
ſic ſit ED,
ad EC.
Dico lineam per E pendulam, eſſe anſam.
2 Exemplum.
D*ATVM*. Datum pondus eſto columna ABCD 6 ℔ pendens, ſimiliter
columnæ primæ propoſitionis diviſa.
& ex Q ſuſpenſum pondus Y ℔ 12.
Q*VAE SITVM*. Anſa invenienda eſt.
*PRAGMATIA*.
19[Figure 19]
Columnæ pendula gravitatis diametrus
eſt IT, ponderis verò Y eſt BQ, TQ ju-
gum ita dirimédum eſt, ut ejus ſegmenta ra-
tionem habeant, quæ eſt inter 12 ℔ Y, &

6 ℔ columnæ, breviusq́;
ſegmentum pon-
deroſioris Y diametrum verſus ſit, quæ eſt
in X.
ut NX anſa ſit quæſita.
3 Exemplum.
D*ATVM*. ABCD iterum columna eſto. ſecta ut paulò ante, & Y 6 ℔
ex X pendeto.
20[Figure 20]
Q*VAESITVM*. Anſa eſt nobis quærĕda.
*PRAGMATIA.*
Columnę pendula diameter eſt IT pon-
deris verò Y, NX, TX jugum ita parti-
tum, ut ſegmenta rationem habeant 6 ℔ Y,
ad 6 ℔ columnæ, quod in V incidit, eritq́ue
VL anſa quæſita.
*PRAGMATIA ALIVSMODI.*
PEndula diametros ponderis MLBCY eſt NX, MLAD verò eſt SG,
&
jugum XS, quod ita ſecandum eſt, ut ſegmentorũ ratio ſit eadem quæ
8 ℔ pondens MLBCY ad 4 ℔ MLAD, &
illorum brevius à diametro pen-
dulâ quæ eſt V gravius pondus verſus ſit, atque hoc modo VL quæſita erit
anſa, ut prius.

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