phy 201
Your 'rubber band calibration' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** Your initial comment (if any): **
** first line ruler markings, distance in actual cm between ends, how obtained: **
1.5, 8.51
7.01 cm
found this by holding up the ruler to the rubber band
** The basis for your uncertainty estimate: **
7.01 +- 0.01
** Positions of the ends of each rubber band, actual lengths of each when the chain supports 1 domino: **
1.5,8.5, 2 9.35, 2.1 9.15, 2.0 9.2, 2.0 9.3, 7.0 14.11
7.01, 7.35, 7.05, 7.20, 7.30, 7.11
0.01
** Distances between ends when supporting 2 dominoes **
7.29, 7.59, 7.28, 7.35, 7.48, 7.12
2 dominos
** Lengths when supporting 4, 6, ... dominoes: **
7.39, 7.78, 7.41, 7.49,7.59, 7.42
4
7.54, 7.98, 7.58, 7.65, 7.78, 7.59
6
7.78, 8.21, 7.73, 7.84, 7.91, 7.75
8
** Your table of force in Newtons vs. length in cm for all rubber bands **
7.01, 7.35, 7.05, 7.20, 7.30, 7.11
7.29, 7.59, 7.28, 7.35, 7.48, 7.12
7.39, 7.78, 7.41, 7.49,7.59, 7.42
7.54, 7.98, 7.58, 7.65, 7.78, 7.59
7.78, 8.21, 7.73, 7.84, 7.91, 7.75
Your rows and columns appear to be reversed from the requested order, but no problem. Easy to read in either order.
** Describe the graph of your first rubber band **
they all have a positive slope, but are not quite linear, they have some curve to them
** The tension force in your first rubber band at length 9.8 cm: **
2.9
** The length of your first rubber band when tension is 1.4 N: **
7.6
** The forces at your observed lengths the 1st rubber band, as given by the curve, and the deviations of those curve-predicted lengths from the observed lengths: **
0.19
0.38
0.76
1.14
1.52
they are the same
** The lengths predicted for forces .19 N, .38 N, .76 N, 1.14 N, etc. by the curve for your first rubber band; the deviations of your actual observations from these predictions: **
7.01
7.29
7.39
7.54
7.78
they are the same
** The typical error you estimate when predicting force for a given length from your graphs: **
the table because it is more accurate. i would estimate +- 0.05 N
** The typical error you estimate when predicting length for a given force from your graphs: **
+-0.05 cm
** **
2 hours
** **
&#Good work. See my notes and let me know if you have questions. &#