Your work on the pearl pendulum has been received. We will be doing some subsequent analysis on this data after the due date, when we can look at it in the context of everyone's data.
The rhythm is faster. It happens so fast it's hard to tell, but after listening to it several times, the pearl hits the bracket faster and faster.
The rhythm is further apart. It takes longer for me to hear the pearl hiting the bracket.
The pedulum hit the bracket about 8 times. The rhythm was steady. To make it steady I placed it on a flat surface, my computer desk.
1. The bracket it parallel to the spine of the book facing towards the bottom of the book, so that the pedulum is not touching the bracket. The sound gets further apart.
2. I have rotated the bracket 45 degrees to the right so that it is facing the bottom right of my textbook. The pendulum is not touching the bracket. It is not as distinctive, but the sound gets further away.
3. The bracket has been turned 45 degrees to the right, counterclockwise and is now parallel to the top of the textbook. The pendulum is touching the bracket. The rhythm is almost steady.
4. The bracket has been turn counterclockwise 45degrees, now facing the top right corner of the textbook. The pendulum is touching the bracket. The sound is faster.
5. The bracket has been turned 45 degrees counter clockwise and the pendulum is touching the bracket. The rhythm is faster.
6. The bracket has been turned 45 degrees counterclockwise, now facing the top left corner of the textbook and the pendulum is touching the bracket. The rhythm is faster.
7. The bracket has been turned 45 degrees counterclockwise, parallel to the bottom of the textbook. The pendulum is touching the bracket. The rhythm is almost steady.
8. The bracket has been turned 45 degrees counterclockwise and the pendulum is not touching the bracket. The rhythm is faster.
9. The bracket is back to its original position.
To obtain the most regular beat in this position the bracket is placed parallel to the top and bottom of the textbook.
.582
.519
.582
.551
.574
.507
.531
.523
.422, .628
.411, .598
.398, .640
.441, .652
78mm
.418, .629, I never made it to the sixth hit. I wasn't confident enough in my recording on the 6th hit to actually record it.
From the release to the first hit, the pendulum is swinging downward to hit the bracket.
After the first hit, the pedulum swings back up and down to the second hit. It differs because from the release the pendulum doesn't have to swing upwards.
From the second to the fourth hit the pendulum must swing upwards, downwards, hit, swing upwards, downwards, and hit. Between the release and the second hit the pendulum on swings downward, hits, swings upwards, swings downwards, and hits. The difference is that one swing upwards.
It doesn't only that by that time the pendulum has slowed down from already enduring as many hits as it has.
The first time interval is shorter than the subsequent because from the release the pendulum doesn't have to swing up the first time. And, as the pendulum continues to swing it loses velocity or momentum.
Subsequent time intervals will increase, because it will take more time for the pendulum to hit.
This experiment shows that the length of a pendulum's swing can be changed by factors such as incline and position in relation to incline disproving the hypothesis.