I've been working on this problem and I got every part right except part F which asks for tension.(adsbygoogle = window.adsbygoogle || []).push({});

A sinusoidal wave is traveling on a string with speed 110 cm/s. The displacement of the particles of the string at x = 23 cm is found to vary with time according to the equation

y = (4.9 cm) sin[1.5 - (7.2 s-1)t].

The linear density of the string is 2.2 g/cm. What are (a) the frequency and (b) the wavelength of the wave? If the wave equation is of the form

y(x,t) = ym sin(kx - (omega)t),

what are (c)ym, (d)k, and (e)Omega? (f) What is the tension in the string?

a)f=1.15 Hz

b)wavelength = 95.7cm

c)Ym=4.9cm

d)k=6.52 rad/m

e)omega=7.2 rad/s

f) my answers so far were 0.00266 N and 0.0000266 N and both were wrong (they seem too low). I tried the equation V = Sqrt(T/u) where T is tension, and u is linear density but I must be making a mistake somewhere.

**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: Quick Tension problem

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