Electrostatic Energy: Mass
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A square metal plate of edge 20 centimeters is suspended from the arm of a balance so that it is parallel to another fixed horizontal mental plate of the same dimensions. The distance of separation between the plates is 1.5 millimeters. A difference of potential of 150 volts is now applied between the plates. What additional mass must be placed in the other arm of the balance so that the suspended plate will retain its original position?
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Solution Preview
From Gauss' Law, the electrical field inside a capacitor is
E * A = Q/permittivity -> E = Q/A permittivity
The force between the two plates of the capacitor ...
Solution Summary
This solution provides the calculations to find the additional mass needed for a figure to retain its original position.
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