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:
Your description of the rhythm of the pendulum when tilted 'back'
The sounds get closer together.
Your description of the rhythm of the pendulum when tilted 'forward'
The sounds get further apart.
Your description of the process used to keep the rhythm steady and the results you observed:
I placed the bracket on a level surface, and i receive a constant rhythm
Your description of what happened on the tilted surface, rotating the system 45 degrees at a time:
Using your textbook and some dominoes placed under each of the top left and right corners of the book and placing the brackets in the center of your book with one side of the bracket parallel to the side of the book, you can demonstrate the type of rhythm the pearl will make when it hits the bracket when rotating it 45 degrees going counterclockwise.
You can tell whether they are gettig closer , farther apart, or constant.
At 0 degrees: farther apart
315 degrees: farther apart
270: constant
225: closer together
180: closer together
135: closer together
90: constant
45: farther apart
Your description of how you oriented the bracket on the tilted surface to obtain a steady rhythm:
Since placing the dominoes put the book on an incline, I would orient it at 270 or 90 degrees for a more steady beat.
Your report of 8 time intervals between release and the second 'hit':
.578
.578
.547
.641
.563
.531
.578
.671
.484, .656, .734, .844
.625, .531, .531, .609
.594, .625, .685, .715
.578, .609, .672, .844
Your report of 4 trials timing alternate hits starting with the second 'hit':
The pendulum may not have been pulled back ar enough to give it enough momentum.
The length of your pendulum in cm (you might have reported length in mm; the request in your instructions might have been ambiguous):
60mm
Your time intervals for alternate 'hits', starting from release until the pendulum stops swinging:
.570, .605, .656, .753
Your description of the pendulum's motion from release to the 2d hit:
Fast and swings in a straight line.
Your description of the pendulum's motion from the 2d hit to 4th hit:
The pendulum tends to move to the right of the observer looking directly at the pearl between hits.
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 of the pendulum is bouncing to the left and right and slowing down between hits.
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 pendulum stops swaying and moves even slower.
Your conjecture as to why a clear difference occurs in some intervals vs. others:
Because when we release it the weight of he pearl will carry its momentum at a faster speed
What evidence is there that subsequent intervals increase, decrease or remain the same:
They will decrease because the pendulum will not swing back far enough for it to give it any momentum.
What evidence is there that the time between 'hits' is independent of the amplitude of the swing?
None, because we only did experiments on the frequency or te pearl hitting the bracket. During this experiment I never had to adjust the pendulum's length to prove or disprove otherwise.
You have good data and clear answers to questions.
After the due date we will be discussing this experiment further via an online forum.