The potential energy of 4-particles each of mass 1 kg planed at the four vertices of a square of side length 1 m is

Q: The potential energy of 4-particles each of mass 1 kg planed at the four vertices of a square of side length 1 m is

(a) +4.0 G

(b) -7.5 G

(c) -5.4 G

(d) +6.3 G

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Ans: (c)