A steel bar is subjected to a vibration at one end, with an amplitude of 0.001 meters and a frequency of 250 Hz (matches problem 3).
a. Express the position of the end as a function of time.
b. E (Young's modulus) for steel is 200x109 Pa, and the density of steel is 7.8x103 kg/m3. Use this to calculate the wave speed as it moves along the bar.