need help with physics homewrk wavelength?

Question

c string 944 N , 1.26 M for wave length and 3.82ms period, what is the linear density of the string .................... what equation did you use??????????

Answer 1

v = sqrt ( T / d )

where v is the velocity of the wave, T the tension in the string, and d the linear density of the string.

The wavelength, velocity, and period of a wave are related by

f L = v

where f is the frequency, L the wavelength, and v the velocity.

You know wavelength and period. Frequency is the reciprical of period ( frequency = 1 / period) so get the frequency and then multiply frequency and wavelength to get the velocity v. Then use the first equation to solve for the linear density. I assume the 944 N given above is the tension in the string.