Your work on energy conversion 1 has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
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How far and through what angle did the block displace on a single trial, with rubber band tension equal to the weight of two dominoes?
1.41,0
5 trials, distance in cm then rotation in degrees, with rubber band tension equal to the weight of two dominoes:
1.93,2
1.96,0
1.88,1
1.91,0
1.96,3
Rubber band lengths resulting in 5 cm, 10 cm and 15 cm slides:
9.41,10.01,10.51
5 trials, distance in cm then rotation in degrees, with rubber band tension equal to the weight of four dominoes:
5.61,0
5.49,10
5.83,15
5.79,5
5.76,6
5 trials, distance in cm then rotation in degrees, with rubber band tension equal to the weight of six dominoes:
7.89,5
7.97,0
8.01,10
8.10,10
7.93,0
5 trials, distance in cm then rotation in degrees, with rubber band tension equal to the weight of eight dominoes:
9.88,10
9.71,12
9.63,0
10.01,
9.98,5
5 trials, distance in cm then rotation in degrees, with rubber band tension equal to the weight of ten dominoes:
13.4,0
13.25,5
13.11,15
13.37,0
13.28,5
Rubber band length, the number of dominoes supported at this length, the mean and the standard deviation of the sliding distance in cm, and the energy associated with the stretch, for each set of 5 trials:
8.99,2,1.928,0.03421,0.0114
9.40,4,5.696,0.1421,0.2
9.8,6,7.98,0.08062,0.38
9.93,8,9.842,0.1666,0.173
10.22,10,13.28,0.1143,0.5
Netwon*cm
** The energy associated with the stretch of the rubber band is the total energy required to stretch the rubber band to that length. For example when the rubber band 'snaps back' from the 9.93 cm length, it exerts force all the way back to its original unstretched length. So the energy would be the sum of all the energies calculated over all four of the increments up through this length.
Please correct these energies, the submit only this question and the next in response. Just copy this question and the next, along with this note, and insert your corrected response.
Slope and vertical intercept of straight-line approximation to sliding distance vs. energy, units of slope and vertical intercept, description of the graph and closeness to line, any indication of curvature:
0.0375,-0.377
N*cm,Newtons
They appear to be relativly close to the line. It should have a little bit of curvature. It would be an upward concavity.
Lengths of first and second rubber band for (first-band) tensions supporting 2, 4, 6, 8 and 10 dominoes:
0.0204,-0.1589
Newtons
The points seem to be placed around the line and maybe a little curve in the downward direction
Mean sliding distance and std dev for each set of 5 trials, using 2 rubber bands in series:
9.03,9.03
9.40,9.3
9.80,9.6
9.93,9.6
10.22,9.8
Slope and vertical intercept of straight-line approximation to sliding distance vs. energy, units of slope and vertical intercept, description of the graph and closeness to line, any indication of curvature:
10.65,0.1108
15.07,0.2588
21.11,0.2997
25.09,0.1033
28.92,0.04062
1-band sliding distance and 2-band sliding distance for each tension:
1.928,10.65
5.696,15.07
7.98,21.11
9.842,25.09
13.28,28.92
Slope and vertical intercept of straight-line approximation to 2-band sliding distance vs. 1-band sliding distance, units of slope and vertical intercept, description of the graph and closeness to line, any indication of curvature:
1.7066,6,9498
cm^2,cm
The points fall very close to the line. The indicate at straightline relationship
Discussion of two hypotheses: 1. The sliding distance is directly proportional to the amount of energy required to stretch the rubber band. 2. If two rubber bands are used the sliding distance is determined by the total amount of energy required to stretch them.
Yes, the long the distance the farther the slide which means that it took more energy to pull the rubber band back and so when released the rubberband went farther.
How long did it take you to complete this experiment?
long time
Optional additional comments and/or questions:
Good work.
According to your last graph the slope was nearly 2, indicating that 2 rubber bands give you about twice the energy you get from 1. Since two rubber bands stretched to the same length would be expected to store about twice as much energy, this supports the hypothesis that sliding distance is determined by the total amount of energy.