Four particles each of mass M, are located at the vertices of a square with side L. The gravitational potential due to this at the centre of the square is
(a) -32GML (b) -64GML2
(c) zero (d) 32GML
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Concept Questions :-
Potential at the centre due to single mass =-GML/2 Potential at the centre due to all four masses=-4GML/2=-42GML=-32×GML.