Physics · 2012
NEET 2012 · Prelims · Code A · Q10
ABC is an equilateral triangle with O as its centre. F_1, F_2 and F_3 represent three forces acting along the sides AB, BC and AC respectively. If…
ABC is an equilateral triangle with O as its centre. $\displaystyle \overrightarrow{F_1}, \overrightarrow{F_2}$ and $\displaystyle \overrightarrow{F_3}$ represent three forces acting along the sides $\displaystyle \mathrm{AB}, \mathrm{BC}$ and AC respectively. If the total torque about O is zero then the magnitude of $\displaystyle \overrightarrow{F_3}$ is :
Official answer
(3)
$\displaystyle F_1+F_2$
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NEET (UG) 2012 Physics question, with the answer from NTA’s final answer key. Where our answers come from.