Science Education News (SEN) Journal 2018 Science Education News Volume 67 Number 3 | Page 55

YEARS 7–12 IDEAS
ARTICLES
FOR THE CLASSROOM
Using Real Data, and Analysing Errors (continued)
Results and analysis
Displacement (m)
Height per turn (mm)
Base length (m)
1.626
1.5875
1.534
tweak h 0 (mm)
sine(theta)
Turns
0.151
Times (milliseconds)
Mean a (raw)
(radian) #1 #2 #3 #4 #5 time (s) (m.s –2 )
10 0.0102498 5639 5773 5828 5645 5567 5.690 0.1004
8 0.0081803 6423 6383 6376 6325 6434 6.388 0.0797
6 0.0061107 7400 7528 7435 7365 7484 7.442 0.0587
4 0.0040410 9359 9312 9123 9243 9320 9.271 0.0378
2 0.0019713 13548 13950 13882 13980 13963 13.865 0.0169
1 0.0009364 22286 22173 23140 22.533 0.0064
-2 -0.0021682 13993 13081 13064 13180 13383 13.340 -0.0183
-4 -0.0042379 9216 9344 9095 9121 9059 9.167 -0.0387
-6 -0.0063076 7305 7199 7233 7504 7285 7.305 -0.0609
-8 -0.0083772 6192 6392 6371 6325 6183 6.293 -0.0821
-10 -0.0104466 5733 5634 5719 5.695 -0.1003
Table 1: The experimental data
Figure 2: The experimental data do not lie on a single line as expected from the hypothesis.
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SCIENCE EDUCATIONAL NEWS VOL 67 NO 3