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course Phy 202
12/9 1
Watch a string vibrate in slow motion. Wiggle the end of the string and make waves, or adjust the frequency and amplitude of an oscillator. Adjustthe damping and tension. The end can be fixed, loose, or open.
CHAPTER 16 | OSCILLATORY MOTION AND WAVES 573
Figure 16.34 Wave on a String ( http://cnx.org/content/m42248/1.4/wave-on-a-string_en.jar )
In this lab, I experimented with waves acting on a string. When both ends were fixed and the damping was set to zero, the wave continued perpetually. Conversely, when the damping is set to 100, the wave stops shortly after I start it. I am assuming that the damping account for the friction and all forces acting on the string. Under high tension, the particles along the string move very uniformly and in quick succession. Under low tension, the particles react very slowly. The oscillating motion made a continuous wave, with a higher amplitude closer to the source. When the end of the string was fixed on both ends, the wave would come back towards the source. Overall, this was an interesting experiment.
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&#Good responses. Let me know if you have questions. &#