ex Mcchflnica , quoad motiim progreffiuiim centti graiu'tatis ^ 

 tenfionem fili A c eundem efFedum praeftarc , ac fi in eadera 

 diredlione verticaii , aut quafi verticali , ipfi centro grauitatis 

 applicetur) . 



II. iiJL. =: =^ X ^ , 



pro motu latcrali fiue horizontali eiusdem. 



III, _ii_^ z^ II {q — y) 



pro motu rotatorio corporis circa id ipfum. Cum porro di- 

 ftantia ^Q crefcat clemento dq^ dillantia aP crcCcct elcmen- 

 to ^ 3 ^ ,• at ob motum rotatorium circa b iliaec (Jill^ntia a P 

 aliud inuiper capiet incrementum 'U'fn'{:o ^i-i, 



hd(px fin. al;R = d(p(p—x), vnde'"'*'''^" 



IV. d {a -i-ji') zz: aj— a (p (p — ^) -h ^ a ^ j 



denique efl: , vt iam vidimus , 



V. q — a — y — ybb — ip — xf . 



Dcfignando nunc pro altero corpore per litteras N, ^ ff-, a, 

 (3 , ^ , V ^ TT , ^ , v|y quantitatcs analogas cum iis , quas pro 

 priore pcr M, M k k <, a^ b^ -^5 J'5 />7 ^ •> ct Cj) indicauimus, 

 crit eodem modo : 



a^Tf , rr 



VI . 



VIT _ii-L- — "z.^ " • 



^ Zgdl^ N • "if » 



VIII. ^^ = !LiLr,iil ; 



IX. D :; — D vKtt — ^) -I- i 3 ^ 



X. ^_a — :;=:/f3^ — (tt — ^y. 



Quum tandem longitudo fili cxtenfi crcfcat pro ratlonc euo- 

 lutionis cylindrorum , erit 



XT. 



