Research Question: To determine the speed of a pulse in a thin metallic spring.
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Introduction
Lab Report
Research Question: To determine the speed of a pulse in a thin metallic spring.
Variables:
- Dependent: Length of spring
- Independent: Period of pulse
- Control: How big the pulse is
Equipment:
- Thin metallic spring
- Chairs(x2)
- Stopwatch
Methodology Setup:
Methodology:
- Two chairs were aligned as bases, one opposite of the other with a distance of 6,49 m and a spring was attached at the end of each chair.
- One person operated the stop watch, while the other created the pulses. A third person wrote down the results shown in the stopwatch.
- The stopwatch was simultaneously operated so it would start counting when the pulse was created and stop counting when the pulse returned to the base that it started.
Middle
1.05 ± 0.01s
No 41
1.24 ± 0.01s
No 74
1.42 ± 0.01s
No 9
1.21 ± 0.01s
No 42
1.16 ± 0.01s
No 75
1.04 ± 0.01s
No 10
1.21 ± 0.01s
No 43
1.04 ± 0.01s
No 76
1.12 ± 0.01s
No 11
1.22 ± 0.01s
No 44
1.11 ± 0.01s
No 77
1.12 ± 0.01s
No 12
1.13 ± 0.01s
No 45
1.08 ± 0.01s
No 78
0.97 ± 0.01s
No 13
1.19 ± 0.01s
No 46
1.03 ± 0.01s
No 79
1.10 ± 0.01s
No 14
1.03 ± 0.01s
No 47
1.10 ± 0.01s
No 80
1.16 ± 0.01s
No 15
1.18 ± 0.01s
No 48
1.10 ± 0.01s
No 81
0.97 ± 0.01s
No 16
1.15 ± 0.01s
No 49
1.04 ± 0.01s
No 82
1.24 ± 0.01s
No 17
1.17 ± 0.01s
No 50
1.32 ± 0.01s
No 83
1.03 ± 0.01s
No 18
1.09 ± 0.01s
No 51
1.40 ± 0.01s
No 84
1.07 ± 0.01s
No 19
1.09 ± 0.01s
No 52
1.20 ± 0.01s
No 85
1.10 ± 0.01s
No 20
1.13 ± 0.
Conclusion
Improvements:
One improvement in this particular experiment could be the use of a new thin metallic spring rather than the old, rusty and weak spring that we used. Another improvement could be using electronic timing equipment and videotaping the movement, which would give us a much more accurate result, since we could actually see in the frames/sec the start of the pulse and the end of it. One last improvement would be to repeat the experiment some more times and also maybe use different size springs.
This student written piece of work is one of many that can be found in our International Baccalaureate Physics section.
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