A 5.5 m length of string has a mass of 0.035 kg. If the tension in the string is 77 N the speed of a wave on the string is

Options

A. `110 ms^(-1)`
B. `165 ms^(-1)`
C. `77 ms^(-1)`
D. `102 ms^(-1)`

Answer

A

Explanation

`mu = (0.035)/(5.5) kg//m , T = 77 N`
where `mu` is mass per unit length.
`v = sqrt((T)/(mu)) = sqrt((77 xx 5.5)/(0.035)) = 110 m//s`