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

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174174A*DDITAMENTI* S*TATICÆ PARS SECUNDA* fuſius explicem, ſunto D, E extimi ejus contactus contra orbiculum A; Ttem
G, H funis novifſimi contactus contra trochleam ſupremam, itemq́ue L, M,
contactus trochleæ ultimæ atque N ſit loco contactuum G, H, interme-
232[Figure 232] dio, ſic O inter I K.
ſitq́ue C finis ipſius funis. Hinc P ſtatuatur in G ut G P
ipſi H F æquetur;
ſic Q in K D, ut K Q, I L æquales ſint. Quibus poſitis,
N G P pondere &
magnitudine ęquatur ipſi N H F; itemq́; O I L ipſi O K Q.
ſed C M omninò nec degravat nec allevat; adeò ut ad pondus datum & gravita-
tem trochleæ accedant inſuper ſemicircularia funis ſegmenta L M, D E, cum
recto ſegmento D Q.
Denique animadvertito cum trochlearum ope quid attollitur, ut pars com-
moti funis in aëre ſuſpenſus à ſolo abſit:
quanta erit iſtius ductorii funis gravi-
tas, tantò minori potentia ductori opus eſſe.
2 Exemplum {λο}ξοβα{ρί}ας
11nbi pondera
in obliquum
@mmovisht
Primum hoc diagramma cætera ſimile eſto primo primi exempli diagram-
mati, ſolummodo hîc manus F non recta ſurſum ſed obliquè &
in latus non
nihil commoveatur;
quibus poſitis, pondus quod à funium unoquoque ſuffer-
tur, per 5 conſectariũ primæ partis hujus ad Staticam additamenti pateſcet.
Sed
@t explicatione fiat illuſtrius;
continuato rectam, ex quâ pondus B

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