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two spheres carrying charge q are hanging from a same point of suspension with the help of threads of length 1 m in a space free from gravity . the distance between them is?

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    the downward force on each is mg.

    from the vertical, then the angle to one string Theta is given by
    kQQ/r^2mg=tanTheta

    but sinTheta=r/2L

    assuming small angles, sinTheta appx=tantheta

    r/2L=kQQ/r^2mg
    r^3=kQQL/mg

    check that

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