Your work on pearl pendulum 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:
Dr. Smith,
I forgot my access code, name , and email in a previous submitted work form of this assignment. I am very sorry it will not happen again.
- Chase
Your description of the rhythm of the pendulum when tilted 'back'
The sounds get closer together. The pearl hits the bracket several times at first and the sounds have a sharp ping noise. As the pendulum continues to hit the bracket, the pearl speeds up and the sounds have a higher pitch when the pearl hits the bracket.
Your description of the rhythm of the pendulum when tilted 'forward'
The rhythm of the pearl pendulum gets slower and slower. The pearl strickes the bracket less and less frequently with each bounce, until it is eventually dangling away from the bracket.
Your description of the process used to keep the rhythm steady and the results you observed:
I placed a couple sheets of paper under the bracket at the end where the magnet is. This made the Pendulum perfectly even and when I let the pearl go to start the pendulum, the rhythm remained steady.
Your description of what happened on the tilted surface, rotating the system 45 degrees at a time:
As I completed the 360 degree counterclockwise circle, I noticed that for every 45 degrees closer I got to the end where the dominoes were the speed of the pendulum pciked up and the sounds had less and less of a time interval between them. As I proceeded toward the end where the dominoes were absent, the pendulum slowed and the sounds became farther apart from one another. However when the short ends of the pendulum were parallel to the top and bottom of the text book, the sounds repaeted a steady rhythm.
Your description of how you oriented the bracket on the tilted surface to obtain a steady rhythm:
Place the bracket so that it is parallel to the top of the textbook with the pearls facing the left or right side of the book.
Your report of 8 time intervals between release and the second 'hit':
1. .531
2. .531
3. .516
4. .531
5. .531
6. .516
7. .5
8. .516
Your report of 4 trials timing alternate hits starting with the second 'hit':
1. .594, .422, .5, .485
2. .531, .484, .422, .360
3. .625, .562, .656, .594
4. .609, .609, .594, .516
The length of your pendulum in cm (you might have reported length in mm; the request in your instructions might have been ambiguous):
The pendulum is 102 millimeters.
Your time intervals for alternate 'hits', starting from release until the pendulum stops swinging:
.070, .063, .054
Your description of the pendulum's motion from release to the 2d hit:
It is a falling motion from the release until the initial contact.
Your description of the pendulum's motion from the 2d hit to 4th hit:
The motion of the pendulum between the first hit and the second hit is a steady one that hits off the bracket and comes straight back.
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 motion becomes shorter and more movement occurs. Sometimes after hitting the brack the pearl might bounce to the left or the right, but not enough to cause interference.
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 motion is a lot shorter with not as much time between the two sounds.
Your conjecture as to why a clear difference occurs in some intervals vs. others:
Beacuse the first time interval is the initail bounce coming from the farthest distance away from the bracket.
What evidence is there that subsequent intervals increase, decrease or remain the same:
Decrease because the longer the pendulum goes the shorter the sounds occur between one another.
What evidence is there that the time between 'hits' is independent of the amplitude of the swing?
It proves that the hypothese is correct, beacause the length of a pendulum's swing is very dependent on it's lengh which is also dependent on how far it swings.
No big problem with the dual submission, but of course it's easier for you to just do it once.
This program is pretty forgiving of omissions in information; if your email address is correct it will match you up with the right code. The Submit Work form isn't forgiving in this sense. Best habit is of course always to submit all the information correctly.