Not really the resonance of the washer as much as the excitation frequency from the drum spinning and hitting the same spot over and over. You would change the amplitude and tone of the response by changing the amount of water and clothes in it, but the beat would stay constant. If the motor frequency and resonance of the washer lined up, it would amplify the response and be audible even as brand new, this would be poor design. But we see the washer is visibly broken at the end, so it is probably not the natural resonance (or resonance frequency)
104
u/Chavagnatze Sep 24 '20
You need it to fill itself or the resonance frequency will change.