A string of length is fixed at both ends

PHYSICS · Subjective · CBSE · Physics · Waves · Waves

Problem

A string of length

1.00\,\text{m}

is fixed at both ends. When the tension is

36\,\text{N}

, its second harmonic has frequency

120\,\text{Hz}

. The tension is then increased to

64\,\text{N}

and the second-harmonic frequency becomes

160\,\text{Hz}

. (i) Determine the linear mass density

\mu

of the string. (ii) Calculate the speed of the wave on the string when the tension is

36\,\text{N}