# Which one is stronger?

The above are $3$ charged metal balls X, Y and Z separated by an equal distance $r$ on a straight line. Let $\lvert{F_Y}\rvert$ be the magnitude of the electrostatic force on Y, and let $\lvert{F_Z}\rvert$ be the magnitude of the electrostatic force on Z. What is the ratio $\lvert{F_Y}\rvert : \lvert{F_Z}\rvert?$

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