IN MM i : 



I 



;ty also be established without referring to Aft i7. 



' two of the forces meet at a point, ther mar be supposed 



to a. may be replaced by their Wh 



same point; this resultant . thM 



; liny A 



lore be equal and oppoar 

 4 pats through the point of intersection of the 





7/-o in Art. 56, the forces reduce to a coop) 

 R be not - 0, the forces can be reduced to a single resultant 



couple (7-0, the resultant force is 



' / be not - 0, let it U 

 ' ) one having each of its forces - tt and its 



sequently = . ouplc be turned in its own 



TCCS acts at Uie origin cxactlj 

 h by hypothesis acts at the origji 

 these forces each other and we hare left 



at tin- c\ he arm OA, in a direction inclined to 



the axis of x at an anL c equation tana 



c axis of x at B, we hare 

 OB** OJcoseca* 



T.s. 



