For a horizontally located uncharged flat capacitor, the lower plate is fixed, and the upper plate is suspended from the balance beam (Fig. 98). The balance is in equilibrium when the distance between the plates is d = 1 mm. How should the load of the second pan of the scale be changed in order to maintain equilibrium at the same distance between the plates, if the capacitor is charged to a voltage V = 1000 V? The area of the capacitor plates is S = 50 cm2.
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