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Three equal masses m are placed at the t...

Three equal masses m are placed at the three vertices of an equilateral triangle of side a. The gravitational force exerted by this system on another particle of mass m placed at the centroid of triangle

A

`(Gm^2)/(3a^2)`

B

`(Gm^2)/a^2`

C

`(Gm^2)/a^2`

D

0

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The correct Answer is:
D
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