15.24 One end of a long string of linear mass density 8.0 * 10–3 kg m–1 is connected to an electrically driven tuning fork of frequency 256 Hz. The other end passes over a pulley and is tied to a pan containing a mass of 90 kg. The pulley end absorbs all the incoming energy so that reflected waves at this end have negligible amplitude. At t = 0, the left end (fork end) of the string x = 0 has zero transverse displacement (y = 0) and is moving along positive y-direction. The amplitude of the wave is 5.0 cm. Write down the transverse displacement y as function of x and t that describes the wave on the string.
15.24 One end of a long string of linear mass density 8.0 * 10–3 kg m–1 is connected to an electrically driven tuning fork of frequency 256 Hz. The other end passes over a pulley and is tied to a pan containing a mass of 90 kg. The pulley end absorbs all the incoming energy so that reflected waves at this end have negligible amplitude. At t = 0, the left end (fork end) of the string x = 0 has zero transverse displacement (y = 0) and is moving along positive y-direction. The amplitude of the wave is 5.0 cm. Write down the transverse displacement y as function of x and t that describes the wave on the string.
The equation of a travelling wave propagating along the positive y- direction is given by the displacement equation:
y (x, t) = a sin ( ……… (i)
Linear mass density 8.0 kg/m and frequency of the tuning fork, = 256 Hz
Amplitude of the wave, a= 5.0 cm = 0.05 m …. (ii)
Mass of the pan, m = 90 kg and te
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