The sides. r* parallel to 



I* the forces / , therefore by Art. 19 



P < N /'/; 



therefore - y 4 - - AB-a and AD- 



% i ' . i 



" 



for 



Ictermines the point /> through which the direction of 

 the resultant passes. It will be observed that AB is dirided 

 at / ' into secments which are inversely as the force* at A and 

 B respectively. 



: Tec P act in a direction opposite to that of Q 



,p 



a similar process will lead us to 



i may be derived from the formula) of the 

 case by changing P iuto - 



It will be observed that yl/?produer ' into 



segments which arc inversely as the forces at A and B re 



y. 



3-1 



