Answer
The maximum displacement is $~~1.75\times 10^{-4}~m$
Work Step by Step
When we compare the two systems, the displacement $x$ corresponds to the charge $q$ on the capacitor.
Since the maximum charge on the capacitor is $q = 1.75\times 10^{-4}~C$, then the maximum displacement is $~~x = 1.75\times 10^{-4}~m$
