LAMINARVM ELASTICARVM. 4^7 



fito breuitatis gratia ~ — (p cuiiis valorem pro fin- 



gulis fpeciebus modo ante elicuimus , fequentes va- 



lores pro litteris A, B, C, D; 



Czzfin.Cp-cof.Cf)-^-^; D=:cof.Cl) + fm.(I) + ^^ 

 A-2fin.(f) + tf^-f-^- Bzz-acof.Cp-^^^-c-^ 



quibus definitis prodierat: 



j/rzrcofd^/CAcor.^+Bfin.^-f -hC^^^+D^""^) 

 vnde concludimus 



(^)-+«_«.cof.ee/(-Acor?^-Bfm.?^+C^"^+D^"'^) 



(J!^)-«i.cofn^(+.Afin.«^-Bcof«^+c/'^-Dr^) 



quibus formulis tam fumma , quam momentum vi~ 

 rium elementarium a parte dextra pro pundo la- 

 minae Y exprimitur. 



Promoueamus nunc pundlum Y vsque ad termi- 

 num A, \bi x — a et ~ — (p ct fumma omnium 

 virium arcui A F applicatarum erit : 



//>^A;i:gcof ^e/(+Afin.$-Bcof(I) + C^^-p^-^) 



n:^pC0f^^;(2fin.(J)(tf^-^-^> 



Similique modo earundem virium momentum refpe- 

 du pundi A erit : 



/</^//)^.rz^^.cof,eO^(-Acof(i)-Bfin.(!) + C^^-hDr^) , 

 -J-]cof.0e/(2fm.(I)(^^+^-^)-2cof.(p(^^-^-'^j). 



Hoc duplici virium effedu inuento , manifeftum eft, 

 portiunculam laminae muro infixam A a iii pundo 



N n n 2 a taa- 



