Static Force Analysis conti...........
Static equilibrium:
Hence a two force member as shown in figure 3(a) will be in equilibrium if (i) both forces are equal and opposite and (b) their line of action coincide. If the forces are equal and opposite but not collinear as shown in Figure 3(b) they will form a couple and body will start to rotate. Hence these two forces should be equal, opposite and collinear.
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