306- DE PRESSIONE PONDSRIS 



QiiLim porro preflio per elementum Y/ fit 



cr: m d x {a. -\- ^ x -\- y y) 



ducatur ea in 7, vt eius momentum prodeat rc- 

 fpcdlu axis AB, quod ergo erit 



my </ a; (a -4- (3 .V -h Y 7) , 



pro huins inte^ratione iam vidimus per totam re- 

 clam F/ fore 



/r</A- = ^E^(EF-4-<?/], 

 bina reliqua integraiia fd\> y — c -^-nx feorfim cuol- 

 vamus : 



Pro littera (3 

 fy X d X — efx d x -\- nfx d x 

 quod integrale per totam rcdarn F/ cxtcnfuni 

 praebct 



4f(A/~AE0+^«(A/-AE')z=E<r(i£>(A^4-AE) 



H-i«(Af'+A.-.AE-hAE') 

 Pro litt<:ra y 

 fyy d x — e efd x ^- 1 e nfx d x -\- n nfx^dx^ 

 quod ioiegrale per totam red.im extenfum dat 



ee.^e-{-e n. (A /- A R') + 5 n (A e' ^ A E'), 

 quae forrna in lianc contrabitur : 



E^(^f +f«(Ae-L-AE) + s««(Af>A^. AE + AE'), 

 Hinc ergo concludimus momcntum refpedu axis AB: 

 »;Ee'ia(EFrfe/)-!-wEf(;fP(A.-+AE)+i;.'|3(A^'+Af.AE+AE';) 

 + mEe{yee-^yen(Ae^kE)-\lynn(Ae'+Ae. AE-f-AE')). 



Calculus autem concinnior reddetur , fi hinc litteras 



in 



