Question

The lowest frequency standing wave that can be set up in a certain piano string has a frequency of 512Hz. The string is 80cm long. The speed of propagation of wave in the string is

Answer 1

Frequency-512Hz
Wavelength-80cm
Speed-40960Hz/cm

Answer 2

Given :

Frequency of string , $\nu=512\ Hz$ .

Length of string , l = 80 cm = 0.8 m .

To Find :

The speed of propagation of wave in the string .

Solution :

We know , speed is the product of frequency and wavelength .

$v=\nu\lambda\\v=512\times 0.8\\v=409.6\ m/s$

Therefore , the speed of propagation of wave in the string is 409.6 m/s .

Learn More :

Waves

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