A uniform string of length 0.80 m and mass 4.0 g is stretched with a tension of 100 N between two fixed supports. During an experiment it is observed to vibrate in its third harmonic, and the frequency displayed on the laboratory CRO is 225 Hz.
(a) Using the physical properties of the string, calculate the theoretical speed of transverse waves along it.
(b) From the observed data, determine the experimental speed of the wave on the string.
(c) Compute the percentage difference between the theoretical and experimental values.
(d) State any two experimental factors that could account for this difference.