408 NEW INVESTIGATION OF 



X y 



The force parallel to t/ will be nothing from 2* 



■^.pi — yO — force parallel toy 



'(5) 



l:.efc^ ^ do. 



The force from S being nothing parallel to A'. 



Collecting the forces parallel to axes cT, j/, 5r 

 respectively we shall have — 



B =s- ^<^ +¥ e^ +'2-e(^ +i- A...(7) 



«>, ?/', «;, Wi ^ ' 



These are the forces which act parallel to the 

 co-ordinate axes where the values of 2* w^ &c. &c., 

 in terms of the co-ordinates of the point attracted 

 and the point attracting are as follows. 



