What musical instruments use simple machines?

Answer 1

Many Musical Instruments utilize simple machines to create sound or facilitate playing. For instance, the lever mechanism is found in pianos, where pressing keys activates hammers that strike strings. Similarly, the pulley system is used in some string instruments, like harps, to adjust tension on the strings. Additionally, the wheel-and-axle concept is present in instruments like the violin, where the bow's movement over the strings produces music.