MOTVS FLVIDORVM, 337 



quia T eft fundio ipfius xx-^jj altera aequatio 

 pro motu iuuenta integrabilis euadit , quemadnno- 

 dum motus poffibilitas poftulat , et pofita virium. 

 adione/(P^jt4-Q_<;^H-R^s)z=S preflio ita defini- 

 tur vt fit 



LfPzz2gS-\-fTT(xdx^ydy)-{-f:t. 



Omnino ergo motus defcriptus in fluido inefle pot- 

 eft : quem ergo accuratius fcrutari operae erit pre- 

 tium. Sit diftantia ab axe 2.Y zzV (^xx-]-yy)—s., 

 ac ponatur integrale/TT(A'^x+j^_y) -/'TTj-^jizriJ' 

 eritque TTcr!li, ^nde celeritas qua elementum Z 



in diftantia Z Y z=: s circa axem OC gyratur erit 

 zzTs-::^^ sT^^is, et preflTio ibidem inuenitur p~^$ 

 4-,-^r:/+/:^ 



C o r o I L r. 



75. Si ergo ekmenti 2, cuiQS diftantia ab 

 axe gyrationis eft ZV — j-, celeritas ponatur -a::^ 

 fiet hinc T^:/ — ^AliZ atque preflio reperiturpz^S 

 •i- Lfi2{A: sy-\r-f:t. Quare fi illa celeritas fit 



— «r fit *— ^Sh- —-{-f:t: vbi uotandum 



^ ^ ng -^ ' 



cafu celeritatis conftantis =:«t ob nz=:o fieri p~bS 



^^^ls-^fu, 



C o r o 1 1. 2. 



77. Fundio temporis indefinita ideo in pres^ 



fionem p ingreditur quoniam per vires externas 



Tom.XIV.Nou.Comm, Vy quo^ 



