A) \[\frac{{{F}_{1}}\,\,and\,\,{{F}_{2}}}{2}\]
B) \[{{F}_{1}}\,\,-\,\,{{F}_{2}}\]
C) \[{{F}_{1}}\,\,+\,\,{{F}_{2}}\]
D) \[2({{F}_{1}}\,\,+\,\,{{F}_{2}})\]
Correct Answer: C
Solution :
Let d be distance of centre 0 of equilateral triangle O form each side. \[\operatorname{Total} torque about O = 0\] \[\Rightarrow \,\,\,\,\,\,\,\,\,{{F}_{1}}d+{{F}_{2}}d-{{F}_{3}}d=0\] \[\Rightarrow \,\,\,\,\,\,\,\,\,\,\,\,{{\operatorname{F}}_{3}}={{F}_{1}}+{{F}_{2}}\]You need to login to perform this action.
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