MOTVS FZVIDORFM. 305 



7T f = X vzz dy = V(RR-f-ff*-+- ff) 

 7rcr=Xo = //2 = V(SSH-jj-4-(7cr) 



■<)f=rfJLi/=V(^+^=V((Q r R f )+(^-r)*-4-(4)-e) i ) 



(po-— fxo^V^^^-f-^^Vt^i-SJ^+^-^^-HfCp-o-) 3 ) 

 f <r= r = V(</y*+- </s 2 ) = V((R-S)+(r-/)*+- ( £ -<r)') 



adhibitis valoribus in §. 32. \furpatis. 



76. Ternae autem pofteriores aequationes, cum 

 prioribus coniunctae , reducentur ad has : 



QR+-#M-$? =0; QS-i-^-i-Cj)<7=o etRS+n-f £o*=tf 

 ternae autem priores , fi pro litteris Q, R, S, ^, r, /, 

 (f), £, o- valores in §. 34.. aifignati fubftituantur , ter- 

 minique prae reliquis euanefcentes praetermittantur, da« 

 bunt has aequationes 2 



iz:i + 2U/; M-M = o 

 3m+2ffl(//; X4- N= o 

 iri+2^/; |jL-+-«=o 



vnde fit L=o, 20=0, et v=o, Mz:-/; N=-X 

 et «=-jju 



•77. Celeritates ergo ternae cuiusque puncti h 

 effe deberent ita eomparatae , vt foret 



du zzldj^r > dz 

 dvznl dx +- jut- </a 



4wzzhdx*r\~$L.4y 



Verum fecunda conditio motus fluidorum poftulat, vt 



fit /=M , X = N et «=p. j vnde omnes coefficien- 



Tom.VI.Nou.Com. Qq tes 



