Derive the equations of oscillations of the two systems shown in the figure and describe the oscillation process that occurs in the systems if at the moment t = 0 the stand in system a is removed and the key in system b is closed. The load in system a stands on a stand so that the spring is not deformed, and the initial charge on the capacitor in system b is zero. What is the maximum deformation of the spring and the maximum voltage across the capacitor during oscillation?

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