JEE Main Physics question
Three equal masses of 1 kg each are placed at the vertices of an equilateral triangle and a mass of 2 kg is placed at the centroid of the triangle, which is at a distance of m from each of the vertices. The force, in newton, acting on the mass of 2 kg is
Answer: (D)
Solution
The three equal masses are placed symmetrically (120° apart as seen from ) at equal distances, so their individual pulls on the 2 kg mass are
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