Question

A string has a mass of 0.8Kg. The length of the string is 2m. The tension in the string is 5N. The string is stretched and fixed at both ends such that when struck it forms the second harmonic. Calculate the frequency of the wave which results on the string.

Answer 1

1.25Hz

Step-by-step explanation:

For waves on a string, the second harmonic is obtained from;

2fo = 1/l √T/M

Where;

l = length of the string

M= mass in kilograms

T = tension in the string

2fo = 1/2√5/0.8

2f0 = 1.25Hz