A) \[({{F}_{1}}+{{F}_{2}})/2\]
B) \[({{F}_{1}}-{{F}_{2}})\]
C) \[({{F}_{1}}+{{F}_{2}})\]
D) \[2\,({{F}_{1}}+{{F}_{2}})\]
Correct Answer: C
Solution :
Let r be the perpendicular distance of \[{{F}_{1}},{{F}_{2}}\] and \[{{F}_{3}}\] from O as shown in figureYou need to login to perform this action.
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