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: **
18.13,18.75
8.13,8.75
I obtained the numbers in the second line by starting my measurement at the 10cm mar instead of the begining of the ruler. It means that the end of the rubberband closer to the bag is being pulled more than the top of the rubberband. The rubberband is marked with 6 red markings.I believe the measurement is with in .02cm of being accurate.
** The basis for your uncertainty estimate: **
The uncertainty is based on the distorted copy of the ruller.
** Positions of the ends of each rubber band, actual lengths of each when the chain supports 1 domino: **
18.13,18.75
18.64,18.92
18.22,19.05
18.51,18.90
18.00,19.04
18.03,18.70
END
8.13,8.75
8.64,8.92
8.22,9.05
8.51,8.90
8.00,9.04
8.03,8.70
** Distances between ends when supporting 2 dominoes **
(8.00,9.00),(8.56,9.24),(8.23,9.46),(8.52,9.04),(7.82,9.03),(8.03,8.46)
These are the weights with 2 dominos in the bag.
** Lengths when supporting 4, 6, ... dominoes: **
(8.01,9.13),(8.65,9.41),(8.18,9.56),(8.43,9.48),(8.02,9.45),(8.28,9.34)
4
(8.05,9.50),(8.23,9.82),(8.06,9.98),(8.20,9.48),(8.00,9.92),(8.12,9.01)
6
(8.15,9.97),(8.56,10.10),(8.08,10.70),(8.26,9.98),(8.00,10.10),(8.32,9.82)
8
END
** Your table of force in Newtons vs. length in cm for all rubber bands **
(8.13,8.75),(8.64,8.92),(8.22,9.05),(8.51,8.90),.19N
(8.00,9.00),(8.56,9.24),(8.23,9.46),(8.52,9.04),.38N
(8.01,9.13),(8.65,9.41),(8.18,9.56),(8.43,9.48),.76N
(8.05,9.50),(8.23,9.82),(8.06,9.98),(8.20,9.48),1.14N
(8.15,9.97),(8.56,10.10),(8.08,10.70),(8.26,9.98),1.52N
END
For the weight distribution of each of the rubber bands, It seems that most of the length is seen between the second and third rubber band.Each of the lengths were measured in centimeters (cm) and Newtons were measured in newton meters (N).
** Describe the graph of your first rubber band **
The first rubber band shows an S-shaped curve and is at an increasing at and increasing rate.
The shape of all six rubber bands are pretty identical to the fist band. The curve is an S-shaped curve and the dots is increasing at an increasing rate. The second and third dots show that they are above the curve and show that they are the longest in length.
** The tension force in your first rubber band at length 9.8 cm: **
1.9N
** The length of your first rubber band when tension is 1.4 N: **
8.92cm
** 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: **
** 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: **
8.44cm,8.50cm,8.57cm,8.76cm,9.06cm
The length doesn't differ.
** The typical error you estimate when predicting force for a given length from your graphs: **
The values on the table because they have more accuracy and the point on the table could be slightly off.
** The typical error you estimate when predicting length for a given force from your graphs: **
I would say that I am off by +-.05cm because of the distortion in the rulers.
** **
1hr 30 min
** **
I had a little trouble with this experiment. I was confused on the number of trials and how the table and graph were to be setup.
You appear to have good data and the results from your graphs appear to be consistent with the data, so I believe you did fine here.