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# Title: [Philosophiae Naturalis Principia Mathematica] Philosophiæ Naturalis Principia Mathematica (shelfmark Leibn. Marg. 166)
# Folio 143, page id 1041163592:0177
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PRINOIPTA MATHEMATICA.
PROPOSIEIO LITL PROBEEMA ZXEV.
243
Concessis Ficurarum curvilinearum quadraturis, invenire Vires qui-
bus corpora in datis curvis lineis Oscillationes semper Isochro.
nas perasent.
Olcilletur corpus L n cllra quavis linea SFR 8 cujus axis lE
OR transiens per virium cenrrum C. ASatuT F X quae curvam il-
lam in corporis loco quoris F coninsat, inque hac cangente LL
rurarum quadraturis (per Mechodos rulgares) innorescit. I pun
eto T cducatur recta YZ tangenti perpendicularis. Agatur C
Dendiculari ill
is rectae FZ.
capiatur TY aequalis arcui T R. Nam longitudo arcus illius ex Fi-
Per-
OCCHEFCNS IN L. aLCIIC ViS centripe
d. F. I.
roportiona-
NTam
C. +B)
PRFMVSi