# Completely Lost in this Physics Problem Sinusoidal transverse waves

A sinusoidal wave is traveling on a string with speed 10.00 cm/s. The displacement of the particles of the string at x = 20 cm is found to vary with time according to the equation y = (5.0 cm) sin[16.0 - (8.0 s-1)t]. The linear density of the string is 7.0 g/cm.
(a) What is the frequency of the wave?
s-1
(b) What is the wavelength of the wave?
cm

(c) Give the general equation giving the transverse displacement of the particles of the string as a function of position and time.
y(x,t) = (5.0 cm) sin[( cm-1)x - ( s-1)t]

(d) Calculate the tension in the string.

## Answers and Replies

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please show us some work you have done on this problem. We can't help you unless you've shown some efforts from your side.

[i'm surprised there is no template made already for this]

i am completely lost i dont know where to start..so some direction would be nice.

i know f=1/T..but how do you find T from this problem?

T is the period, ie the time of one oscillation. Now look at your equation, it resembles a wave through the sine function and the question then is: by what amount do you have to change the time "t" to make the sine go around one time?