Pendulum experiment clarification

#$&*

course Phy 201

Your note: I do have a question about the scale on which you measured the length. A pendulum of length about 10 inches or 25 cm would be expected to undergo 60 cycles in a minute, and it would be difficult to make a pendulum of this length differ much from this ideal result.See my note and please submit a short note, along with a copy of this note, and clarify what you used to measure the lengths of your pendulums, and what the units were.*@

Response: I was using one of the ruler links you provided, but I think what also may have increased the number of observed cycles is that I saw in a note that it may be necessary to gently move your fingers at the top while holding the pendulum to ensure that it keeps moving for the entire 60 second period.

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@& I believe I posted a response to this a few days ago. Let me know if not, so I can see what else I might have missed.

The rulers explain a lot. If you used the smallest of the scales, you could get the results you report, and I expect this is what happened.

You won't affect the count very much by moving your fingers in synchronization with the pendulum, so it's the rulers that explain the discrepancies.

As I think I mentioned in my notes on the lab exercise, your data had all the right patterns and trends, so I figured the high counts must have to do with measurement of the length.*@