Full text: Correspondance (Tome 2)

:5'i (EUVRES DE FERMAT. - CORRESPONDANCE. 
diviso pondere B in partes aequales E, F, B, C, 1), collocentur eae, partes in 
punctis E, F, B, C, D, et sint intervalla EF, FB, BC, CD ecqualia. Suppo- 
nimus pondus B, in puncto B collocatum et a puncto B suspensum, idem 
ponderare ac partes E, F, B, C, 1) simul sumptae, in vecte collocatae et ah 
eodem puncto B suspensae. 
Illud nempe accidit quia, propter circulum EFBCD, partes ponderis B 
earndem semper servant distantiam a centro terrae ac pondus ipsum inte 
grum B : quod non animadvertisse et descensus gravium parallelos suppo 
suisse errorem peperit Archimedeum. 
Ilis suppositis, propositionem nostram demonstramus, et ecce tantum 
casum in quo tum vectis centrum, tum extrema aequaliter a centro terra;• 
distant, quia hic casus veritatem prioris vectis geostatici non supponit, de 
qua videris ambigere. 
Sit vectis FHN (fig. 17), cujus centrum H, extrema F et N, in eadem, 
quo punctum H, a terree centro distantia. Centro A, intervallo AH, descri- 
Fig. 17. 
batur porlio circuli FHN, vectis extrema committens, et sit grave in F ad 
grave in N in proportione reciproca circumferentiae HF ad circumferen 
tiam HN : Aio vectem FHN a puncto H suspensum mansurum et aequili 
brium constituturum. 
Ifanc autem proportionem earndem esse quae angulorum ad centrum A, 
palet : ex constructione et duobus axiomatibus praecedentibus facillime 
theorema concludes. 
4. Ea hâte du courrier méfait finir là, parce que je ue doute pas que 
vous ne puissiez voir la conclusion avec un peu de méditation.
	        
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