Quite simply because the shorter and lighter an object is the easier it is for it to vibrate faster. The faster it vibrates the higher the perceived pitch.
tuning fork steel instrument in the shape of a U with a short handle. When struck it produces an almost pure tone, retaining its pitch over a long period of time; thus it is a valuable aid in tuning...
A tuning fork, which for many guitarists, have been outdated by the modern electronic tuner, is a VERY accurate, non-electric, Y-shaped metal fork that you hold by its base. You strike it against a...