The graphs in Figure P16.4 show the displacement caused by a wave moving along a string at two instants,

(a) \(t_{1}\) and

(b) \(t_{2}\). Let \(v_{\mathrm{av}}\) denote the average speed of a piece of string during the time interval between \(t_{1}\) and \(t_{2}\). Compare the wave speed \(c\) to \(v_{\mathrm{av}}\) of a piece of the string at the position \(x=a\).

Data from P16.4

Transcribed Image Text:

(a) D, (m) a 4 (w) xm 0 a 2a (b) D, (m) a 0 (w) x r 2a a