2Ï3 



'1=0, '«1 r= " 



positis scilicet, uti nuper, x, y, z, et ^x, ^y , 's angulis, quos cum 

 axibus rav x, y, s in utroque corpore constituit directio impulsio- 

 nis ; hincque porro 



atque 



J- _L -A • 



Habentur igitur jam 



,, , _ (1 -4- X) (/i ^ -I- ViQcos. ^ 



(i -H i) K 



^u _(!)'__ (1 H- X) (/i^ H- W^cos.y 



(k + V ^^ 

 V ' = 7 r^-zrr^ 



(û H- ïJ M- 



e'' 



9" - 9' 



\-' 1= h' - 



^cs;^" — 'cp' — 



'y- ^ V^ - 



(i + v) V 



