<iKAM OF 



' wo font* acting at a point & nprfl 

 <md majfitiVW? Ay fi*> traigkt lints draw* frmm lJU 



,.-.'-. < , 



irAlVA ;wir\ thr.-u.jh th>- ) + nn!. 



oposition is called the JWUyrosa ^A 



I the direction of the resultant 



the forces are equal it in clear that the direction 



of the resultant will /-/>-- the angle between the dirrctioos 



"f the force*; * in magnitude 



direction by two straight lines drawn from the point 



where they act, and describe a parallelogram en these straight 



i^nal of the parallelogram which pisses through 



of the resultant 



Let us assume that this is true for forces m and at inclined 

 i <Uv, and also for forces p and inclined at the same 

 angle; we can shew that it must then be true for two force* 

 p and i* + also inclined at the same angle. 



|X>int at which the forces p and M act; 

 ABi A< ro- 



mal to the i ingnitude: 



M! resultant o( p and M 

 along Al>. 



Again, take CE in the same ratio 

 to AC that M bears tow. 11 



we may suppose the force a which acU in the directio: 

 to tv Tore the forces p, M, and , 



in ti t lin>< .!/;, -ia,and CE, are the same as p and 



+ n in the straight lines AB and A 



Now replace p and m by their resultant and transfer its 

 point of apt'. >en resolve this force 



YO |>arai emotively; tUse 



<t evidently be p and m, tie formsr actinc 



resolved parts must eridently be f and , the ormer MM 

 in the a M\ and the Utter in the direction 00. 



a transfer p to C and M to O. 



