3is D E MO T V 



Vbi / - ab O vsqiie ad S J extendi debet. Huius 

 autem^valor in tubo OC eft zzf-^, per totum vero 

 tubum annexum DZ vocetur valor inde oriundus 

 — D. Hinc quia prcirio in O o eft zn tt cric 



agTrrr A: t — ^gx-^vv 



ct ob prefiTionem in Z z aequalem preflloni at'^ 

 mofphaerae ^ k erit ibi : 



quarum aequationum haec ab ilia fubtrada dat 



^g(7r-it)-2g(^-A0+J^^(f:-i)4-^4^/(D+|^) 



Quoniam vero tempusculo dt altitudo x minuitur 

 elemento d x celeritate v crit dt :=: ^ , fiet 



Ag[r.^k-a^x)dxz:zi^^^-^i)vvdx-'2ffvdv[T^-Vl^') 

 Ponamus Bzz- et ^-ir:A vt fit 



^g^n-k—a^x^dxzzl^vvdx—i^m-^-x^vdv 

 quae diuifa per [m-\-xf et integrata praebet 



/K—k—a-]rX^ ^ (V V 



vbi conliantem ita definiri oportet , vt pofito xzzh 

 celeritas v cuanefcat. 



lam pro motu emboli pofito eius ponderc zzffh , 

 fridione ^^ffb^ is deorfum vrgetur vi zzff^k-^-u 

 4- ^ — TT — (5^ /6) , vnde eius motus erit 



V V ZZ Conft. — *-Si^ x-i.{i—S) h x _^4^Jju_£ x^frcdx) 



b 



verum 



