... , with most of the vibrational energy at the , and little at the (), as is the case with other ... in its principal mode, the handle vibrates up and down as the prongs move apart and together. There is a (point of ... other, so at a distance from the fork they and largely cancel each other out. If a sound ... open, the first string of the viola played open, and an octave above the first string of the cello, ...