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Two identical small equally charged conducting balls are suspended from long threads secured at one point. The charges and masses of the balls are such that they are in equilibirum when th distance between them is a(the length of thread `Lgtgta`). One of the balls is then discharged, Again for the certain value of distance `b(bltltl)` between the balls, the equilibrium is restored, the value of `(a^(3)//b^(3))=(square)`.

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