(adsbygoogle = window.adsbygoogle || []).push({}); 1.

Determine the speed of transverse waves on

a string under a tension of 73 N if the string

has a length of 2.1 m and a mass of 5.9 g

Answer= 161.1925893 m/s

I have a problem with the second part of the question:

Calculate the power required to generate

these waves if they have a wavelength of 29 cm

and an amplitude of 7.3 cm. Answer in units

of kW.

2. Velocity= Square Root [Tension/(mass/length)]

Energy= 2 pi^2 mf^2 A^2

A-amplitude

m-mass

f- frequency

Power= Energy/time

3. I found the frequency by taking the velocity/wavelength and then found the energy using the above equation. I tried to find a value for time by taking the inverse of the frequency (period) and then plugging the values into P=E/t, but was not correct

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Power required to generate waves

**Physics Forums | Science Articles, Homework Help, Discussion**