course phy 202
Here is my work from Monday 02/12/07
There was 32 Rubberbands and 34 paperclips.
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Length we stretched the rubberband
3.94 meters
We then plucked the rubberband and recorded the time that it took for each wave to travel back.
0-0
1-.922
2-1.281
3-1.301
4-1.33
5-1.133
4 meters
0-0
1-1.41
2-1.555
3-1.473
4-1.562
5-1.531
6-1.621
4.35 Meters
0-0
1-1.222
2-1.480
3-1.313
4-1.285
5-1.211
4.45 Meters
0-0
1-.679
2-.633
3-1.087
4-1.270
5-1.465
We then figured out that each dominoe is equal to 17 grams and that it takes the weight of 12 dominoes to stretch the rubberband 29cm."
From the lengths of your chains and the calibration with dominoes, what were the tensions in the various systems?
What were the avearge velocities of the pulses in your various systems?
course phy 202
This is the data for Friday the 17.
4.45 meters is what our chain of rubberbands was stretched out to.
1 Hump
Went 24 half cycles in 10 seconds.
2 Humps
Went 25 half cycles in 10 seconds.
3 Humps
Went 36 half cycles in 10 seconds.
4 Humps
Went 120 half cycles in 10 seconds."
end of document
What was the tension in the system at that length?
What was the wavelength of the pulse you were sending for each harmonic?
What do you therefore conclude the propagation velocity was for each harmonic?