Answer to Question #192963 in Mechanics | Relativity for April

Question

A standing wave is set up in a string 120 cm long. The string vibrates in four segments under 

a frequency of 120 Hz. Calculate the wavelength and the fundamental frequency of the string

Answer 1

$L =120\ cm =1.2 \ m$

$n = 4 \$

$\lambda= \frac{2}{n}*L= \frac{2}{4}*1.2=0.6$

$f = 120$

$f= f_n*n;f_n= \frac{f}{n}= \frac{120}{4}=3$

$\text {Answer : }\lambda = 0.6\ m ; f_4= 30\ Hz$