Three particles each of mass \( m \) are kept at vertices of an equilateral triangle of sides \(....

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Three particles each of mass \( m \) are kept at vertices
P
of an equilateral triangle of sides \( L \). The gravitational field at centre due to these particle is
(1) Zero
(2) \( \frac{3 G M}{L^{2}} \)
(3) \( \frac{9 G M}{L^{2}} \)
(4) \( \frac{12}{\sqrt{3}} \frac{G M}{L^{2}} \)


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