FYKOS Year 35 Series 1 Problem 5 — mechanically (un)stable capacitor · FYKOS 35 #35.1.5
Physics · electromagnetism
Problem
Assume a charged parallel-plate capacitor in a horizontal position. One of its plates is
fixed and the other levitates directly below it in an equilibrium
position. The lower plate is not mechanically fixed in its place.
What is the capacitance of the capacitor depending on the voltage applied?
Is the capacitor mechanically stable?