O is the centre of an equilateral triangle ABC. F 1 , F 2 and F 3 are three forces acting…
Physics · JEE Advanced · NTA Exams — Rotational Motion
O is the centre of an equilateral triangle ABC. F1, F2 and F3 are three forces acting along the sides AB, BC and AC as shown in the adjoining diagram. What should be the magnitude of F3 so that the total torque about O is zero?
- \(\frac{F_{1}+F_{2}}{2}\)
- 2 (F1 + F2)
- (F1 + F2)
- (F1 – F2)
Answer
(C) (F 1 + F 2 )
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