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As shown in figure , four masses each of...

As shown in figure , four masses each of mass `3sqrt2` kg at the corners of a square of side 3 m . Calculate the gravitational potential energy of system of these four particles. Also calculate the gravitational potential at the centre of square. `(G = 6.67 x 10^(-11)` SI unit)

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The correct Answer is:
`U = - 216.67 J, phi = - 5.336 xx 10^(-10) m^(2) s^(-2))`
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