phy 201
Your 'pearl pendulum' 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 general comment, if any: **
** Your description of the rhythm of the pendulum when tilted 'back' **
They seem to get closer together
** Your description of the rhythm of the pendulum when tilted 'forward' **
they seem to become farther apart, but it is hard to tell since it happens very quickly
** Your description of the process used to keep the rhythm steady and the results you observed: **
i used a level to make sure the table i was using was level and the rhythm did seem to be ver level (more steady than the first 2)
** Your description of what happened on the tilted surface (textbook and domino), rotating the system 45 degrees at a time: **
when the bracket was parallel with the sides and the pearl was tilted upward, the beats got closer together. when the bracket was parallel to the sides and the pearl was on a downward slope, they got farther apart. when the bracket was perpendicular to the sides, there was no major differentiation between the runs.
** Your description of how you oriented the bracket on the tilted surface to obtain a steady rhythm: **
the bracket should be on a flat surface.
** Your report of 8 time intervals between release and the second 'hit': **
.2890625
.3007813
.3007813
.3359375
.3242188
.3007813
.3007813
.3007813
These are the times between each hit the pendulum made against the bracket and they were obtained using the TIMER program.
** Your report of 4 trials timing alternate hits starting with the second 'hit': **
0.676, 0.633, 0.613
0.675, 0.671, 0.631
0.621, 0.613, 0.648
0.602, 0.613, 0.621
These are four seperate trials and they are the time it takes to make 2 full swings, they were obtained using the timer program.
** The length of your pendulum in cm (you might have reported length in mm; the request in your instructions might have been ambiguous): **
9.4cm
** Your time intervals for alternate 'hits', starting from release until the pendulum stops swinging: **
0.644, 0.633,0.628
** Your description of the pendulum's motion from release to the 2d hit: **
1
** Your description of the pendulum's motion from the 2d hit to 4th hit: **
2, the second hit consists of the pearl going from equilibrium to extreme, and then extreme to equilibrium.
** Your description of the difference in the pendulum's motion from release to the 2d 'hit', compared to the motion from the 2d 'hit' to the 4th hit: **
release and 2nd hit= 3
2nd to 4th= 4
** Your description of the difference in the pendulum's motion from the 2d to the 4th 'hit' compared to the motion from the 4th to 6th hit: **
they are the same (each have 4 intervals)
** Your conjecture as to why a clear difference occurs in some intervals vs. others: **
because there are only 3 intervals between release to 2nd hit and there are 4 intervals between the rest
** What evidence is there that subsequent intervals increase, decrease or remain the same: **
they would be the same (4 intervals)
** What evidence is there that the time between 'hits' is independent of the amplitude of the swing? **
because the amount of intervals between each hit doesnt change
** **
1 hour
** **
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