Go to: https://phet.colorado.edu/en/simulation/wave-on-a-string

Part I: Waves on a string with no end 1. Choose "No End". 2. Set the Amplitude to "0.75cm" and the Damping to "None" 3. Determine the speed of the waves at each tension setting (high, medium and low). Explain what measurements you made to calculate the speed.

tension	v (m/s)
high
medium
low

4. Does the speed of the wave depend on the frequency or is it the same for all frequencies?Collect data to support your answer.

Part II: Waves on a string with fixed end

The reflected wave interferes with the original wave and creates a standing wave composed of nodes and antinodes if the frequency is just right. A node will always exist at the fixed end because the phase of the wave is inverted upon reflection and therefore always destructively interferes at that position. Adjust the frequency until maximum amplitude results. (You can use the reference line to help you detect small changes in the amplitude as you fine tune the frequency.)

1. Choose "Oscillate" and "Fixed End". 2. Set the Amplitude to "0.05", the Tensionto "High", and the Damping to "None"

3. Measure the frequencies of the 1^st, 2^nd, 3^rd, and 4^th harmonics and record. Take screenshots of the fourstanding wave patterns and include in the lab report.

harmonics	frequency (hz)

\f\f\f\f\f\f