I did fourier analysis on a set of force data from a vibrating string. In my graph of magnitute and frequency, I'm getting major peaks at 62.1 Hz and 249.0 Hz. There is a tiny blip in the data at 125 Hz and nothing at 186 Hz. I have two questions. Do the peaks at 62.1 and 249 mean that those are the predominant frequencies that the string is vibrating at? And if so why wouldn't there be a more dominant peak at 125 Hz or 186 Hz, two of the other resonant modes of this string. What about a system would cause the string to skip vibrating at such frequencies?