A piano wire is made of steel, with a diameter of 1.04 mm
and a density of
7860 kg/m3.
The wire is stretched inside the piano to a tension of 400 N.
- How fast do vibrations travel down this wire?
- This particular wire is 0.6 m long.
How long does it take a wave to travel from one
end to the other, and then back again?
- Can you guess the note this wire will produce?
- Leopold demands that this wire produce a perfect A-note,
with frequency 220 Hz.
What do you do?