They say that the mechanical analogues of capacitors are springs, and of inductors are shock absorbers. And this does have a strong intuitive appeal.
But do springs/shock absorbers have any kind of frequency-dependent behaviors?
Yes... Think of a standard spring watch movement. (I believe the formal term is "escapement"). There is a specific time period between each direction reversal, just like a clock pendulum.
Beachcomber
Exactly. The mass and shape of the wheel determine the moment of inertia of the wheel. This can be analogous to inductance. The spring, analogous to capacitance. The combination forms a 'tuned' circuit that oscillates at a resonant frequency and requires only a little energy input to make up for frictional losses. Much like how a tuned circuit draws little real power from the supply to make up for resistive losses.
The escapement mechanically gets a 'nudge' from the pawl system that it controls as it swings through the center point. Electronically, this is similar to having a pulse of power applied as the current through the inductor approaches maximum.
daestrom
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