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Four Identical Subatomic Particles,each of Mass M,are Initially at Rest

Question 2

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Four identical subatomic particles,each of mass m,are initially at rest and located on the four corners of a square,one at each corner.The length of each side of the square is L.There aren't any other forces on the particles besides the gravitational force.What is the magnitude of their initial accelerations?


A) Gm/L2
B) 2Gm/L2
C) 3Gm/L2
D) None are correct.

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