A) \[{{F}_{1}}+{{F}_{2}}\]
B) \[{{F}_{1}}-{{F}_{2}}\]
C) \[\frac{{{F}_{1}}+{{F}_{2}}}{2}\]
D) \[2({{F}_{1}}+{{F}_{2}})\]
Correct Answer: A
Solution :
If we take clockwise torque \[\tau ={{\tau }_{{{F}_{1}}}}+{{\tau }_{{{F}_{2}}}}+{{\tau }_{{{F}_{3}}}}\] \[0={{F}_{1}}r+{{F}_{2}}r+{{F}_{3}}r\] \[{{F}_{3}}={{F}_{1}}+{{F}_{2}}\]You need to login to perform this action.
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