ai8 REMIGII NOJITER INVENTl 



tf+ ; ct i^o nmzzs s{y y — y xV 6^p ; vnde refultant 

 i^onj:=ss{Vy-Vxy 6+ — r ;■ .v 64 ; ad quAiiim 

 normam cclcritas nauis dato opcrariorum numcro detcrmi- 

 nari potelh 



§. 5. Adfunt Ycro in his nequationibus duo momen- 

 ta ^ ct s s , quorum vnum ex altcro fuppofito ell dcfi- 



nicndum. Cum vero conducat palac fipcrficicm tantam 

 cfTiccrc , qunntam circumllantiac pcrmittunt , aniimatur ea 

 16 pcdum quadratorum , ita , vt lungltudo fit 8 , ct la- 

 titudo 2 pedum , vltra hunc cnim tcrminum , nili rcmum 

 intractabilcm rcddcre vclimus , afccndcrc vix licebit. Hac 

 fuppofita pro ^, prodi')unt fcqucntcs acquationcs 

 I40ww;=:pjj( V y—V x)'6^{§. ^.) 



yx^yj~yf~^,=-y -r^r- 



,, — /■-1/11^ _4- V ''"* \* — - ( ^-'-''' _u V -"""!'/ 



J — ^ ' i6yrr ^^ ' i6fJ* / p ^ i«rr ' iisJi ) 



Adeoque :=?. = ( V rfrr -+->" 7^77 )': J 

 Ad impctrandum itaquc valorem ^a^ dctcrminanda prius crit 

 et celeriLis vibraticni.-^ rcmi pcr opcrarios , numcrus opc- 

 rariorum ct planum rcfilkntiac nauis. Qiiod attinct nd 

 prius momcntum , cuidcns cft ; quo maior ca aflTumatur , 

 eo minorcm forc ^ ct co mniorem celcritarcm nauis cflc 

 futuram. Cum -vcro fpatium dcfccnfus opcrariorum 2 pc- 

 dcs vcl ad fummum 2 ; pcdcs conficiat , tcmpus , quo 

 illud abfoluirtir, non commodc minus i^^ affiimcre licct , 

 fudc clicitur altitudo cclciitati dcfccnfiis opcrarioium rcfpon- 



dcus 



