Your general comment, if any:
Your description of the rhythm of the pendulum when tilted 'back'
The rhythm gets faster
Your description of the rhythm of the pendulum when tilted 'forward'
the sounds gets further apart and the rhythm gets slower.
Your description of the process used to keep the rhythm steady and the results you observed:
I had to tilt the bracket slighty forward @ a 11 oclock position in order for the rhythm to be steady.
Your description of what happened on the tilted surface, rotating the system 45 degrees at a time:
when the bracket was parallel with the side of the book ithe sounds got further apart. As i rotated it 45 deg the sounded somewhat the same but it had more hits, when i rotated the bracket perpendicular to the spine of the book speed increased and there was less hits then the position before. My next position seemed to have less hits but at a faster pace. another 45 degree rotation allowed for the most consecutive hits in the shortes amount of time. Another 45 degress had more hit than over a period of time. The final position allowed for the similar amount of hits in a longer time period.
Your description of how you oriented the bracket on the tilted surface to obtain a steady rhythm:
the positon parellal to the spine allowed the most hits in both front and back positions.
Your report of 8 time intervals between release and the second 'hit':
1 6396.375 .28125
2 6411.422 .28125
3 6428.188 .234375
4 6445.516 .234375
5 6462.031 .296875
6 6486.875 .296875
7 6503.5 .21875
8 6525.344 .28125
Your report of 4 trials timing alternate hits starting with the second 'hit':
6610.266, .234375, 1, .984375
The length of your pendulum in cm (you might have reported length in mm; the request in your instructions might have been ambiguous):
19cm
Your time intervals for alternate 'hits', starting from release until the pendulum stops swinging:
Your description of the pendulum's motion from release to the 2d hit:
the motion of the pendulum is decreased each hit
Your description of the pendulum's motion from the 2d hit to 4th hit:
as the pendulum hits the bracket engery is transfered to the bracket lessing the altitude ot the pendulum.
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:
the first hit is the pendulum at its highest peak and at the second hit it is at a higher peak than the fourth hit.
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:
the second hit is still signicantly higher than the fourth and sixth. by the fourth hit the pendulum has little energy left and the hits from the fourth to the sixth are faster.
Your conjecture as to why a clear difference occurs in some intervals vs. others:
the first interval is longer than the subsequent time intervals
What evidence is there that subsequent intervals increase, decrease or remain the same:
to increase because the distance being traveled pendulem is reduced allowing for more hits in less time.
What evidence is there that the time between 'hits' is independent of the amplitude of the swing?
with a longer string the more energy is gathered and results in more hits.
20:27:20 01-31-2006
Your general comment, if any:
Your description of the rhythm of the pendulum when tilted 'back'
The rhythm gets faster
Your description of the rhythm of the pendulum when tilted 'forward'
the sounds gets further apart and the rhythm gets slower.
Your description of the process used to keep the rhythm steady and the results you observed:
I had to tilt the bracket slighty forward @ a 11 oclock position in order for the rhythm to be steady.
Your description of what happened on the tilted surface, rotating the system 45 degrees at a time:
when the bracket was parallel with the side of the book ithe sounds got further apart. As i rotated it 45 deg the sounded somewhat the same but it had more hits, when i rotated the bracket perpendicular to the spine of the book speed increased and there was less hits then the position before. My next position seemed to have less hits but at a faster pace. another 45 degree rotation allowed for the most consecutive hits in the shortes amount of time. Another 45 degress had more hit than over a period of time. The final position allowed for the similar amount of hits in a longer time period.
Your description of how you oriented the bracket on the tilted surface to obtain a steady rhythm:
the positon parellal to the spine allowed the most hits in both front and back positions.
Your report of 8 time intervals between release and the second 'hit':
1 6396.375 .28125
2 6411.422 .28125
3 6428.188 .234375
4 6445.516 .234375
5 6462.031 .296875
6 6486.875 .296875
7 6503.5 .21875
8 6525.344 .28125
Your report of 4 trials timing alternate hits starting with the second 'hit':
6610.266, .234375, 1, .984375
The length of your pendulum in cm (you might have reported length in mm; the request in your instructions might have been ambiguous):
19cm
Your time intervals for alternate 'hits', starting from release until the pendulum stops swinging:
Your description of the pendulum's motion from release to the 2d hit:
the motion of the pendulum is decreased each hit
Your description of the pendulum's motion from the 2d hit to 4th hit:
as the pendulum hits the bracket engery is transfered to the bracket lessing the altitude ot the pendulum.
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:
the first hit is the pendulum at its highest peak and at the second hit it is at a higher peak than the fourth hit.
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:
the second hit is still signicantly higher than the fourth and sixth. by the fourth hit the pendulum has little energy left and the hits from the fourth to the sixth are faster.
Your conjecture as to why a clear difference occurs in some intervals vs. others:
the first interval is longer than the subsequent time intervals
What evidence is there that subsequent intervals increase, decrease or remain the same:
to increase because the distance being traveled pendulem is reduced allowing for more hits in less time.
What evidence is there that the time between 'hits' is independent of the amplitude of the swing?
with a longer string the more energy is gathered and results in more hits.