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Question

Three particles A,B and C each of mass m are lying at the corners of an equilateral triangle of side L. If the particle A is released keeping the particles B and C fixed, the magnitude of instantaneous acceleration of A is

Joshi sir comment

force by the other two on A = Gmm/L² each but the angle between the two forces is 60 degree so resultant force = √3Gmm/L²

now calculate acceleration?

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