Question

Consider a monochromatic wave on a sting described by an equation Y(x,t) = cos (x - t). Assume everything is expressed in SI units.

a) Which way the wave is moving, left or right?

b)

Suppose the same string is now fixed at two ends and has a length 1 m. 2.6

Find three lowest frequencies of standing wave resonances.

c) Sketch the profile of the string corresponding to the second standing wave

d) What should be the speed of wave on a string in order for the first resonance has a frequency of the standard A-tone (440 Hz).

Answer 1