Question

If the length of a piano wire is 1 m and mass 20 gm, and it is stretched by a force by a
force of 200N then the fundamental frequency of sound waves produced by the piano
will be??​

Answer 1

Answer:

M = 2.50 kg

T = 200 N

l = 20.0 m

Mass per unit length, μ=M/l=2.50/20=0.125Kgm

−1

v= T/μ

= 200/0.125

= 1600

=40 m/s

∴ Time taken by the disturbance to reach the other end,

t=l/v=20/40=0.5s

Explanation:

hope it will help you