ERROR ANALYSIS:
One source of error was that the adjustable clamp was very loose and at higher angles, it would not keep the rod from moving. This was constantly causing issues in adjusting and checking on the angle indicator. At the last two angles it would hold the rod at all, and this required holding the rod manually while it spun at that angle, which is very unreliable. To fix this error, there should be a way to screw the pendulum into the stand tightly using one screw that can be taken out and put back in.
Furthermore, the angle indicator was very flimsy and would move a lot during the lab. Many times it had to adjusted and moved back into position, but it would not be the same position every time. The angle indicator position could not be controlled or kept constant. This caused changes in angle and data to be skewed. To fix this error, the angle indicator should be glued on to the pendulum mechanism to keep it from moving.
Lastly, the pendulum was to be swung from 10 degrees each time, however there was no constant method to swing it at that angle each time. It was based on just guessing where 10 degrees was each time just by looking at it. This would not be constant or accurate each time and therefore skew the results. To fix this error, a large protractor could be used by placing it next to the pendulum, and then pulling it to 10 degrees each time.