Question:
Figure shows a plot of the transverse displacements of the particles of a string at $t=0$ through which a travelling wave is passing in the positive $x$-direction. The wave speed is $20 \mathrm{~cm} / \mathrm{s}$. Find
(a) the amplitude
(b) The wavelength
(c) The wave number and
(d) The frequency of the wave.
Solution:
