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O is the centre of an equilateral triang...

`O` is the centre of an equilateral triangle `ABC`. `F_(1), F_(2)` and `F_(3)` are the three forces acting along the sides `AB, BC` and `AC` respectively. What should be the value of `F_(3)` so that the total torque about `O` is zero?

A

`((F_(1)+F_(2)))/(2)`

B

`(F_(1)-F_(2))`

C

`(F_(1)+F_(2))`

D

`2 (F_(1)+F_(2))`

Text Solution

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The correct Answer is:
c
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