Patrick Mooney
Tick Tock Lab Extended
Purpose:
To investigate how the period of a pendulum varies with length.
Procedure:
First, set up a pendulum using a pegboard, some string, a hook, and an object.
Make the length of the pendulum 65 cm and the height before the swing to be 5 cm. Then
measure the time for 10 swings and record the results, doing so three times. Find the
average of the three times, and then find the period of one swing by dividing that average
by ten.
Then, shorten the length of the pendulum by 5 cm and repeat the process until the
length of the pendulum is 10 cm. Now, using the data, create two graphs, one with a graph
of the period vs. the length and the other with a graph of the period squared vs. the length.
From the second graph, predict the length of pendulum that would have a period of 2 s, and
construct a pendulum of that length.
Do three trials of ten oscillations, find the average,
and divide by ten to find the period. Then, find the % difference between that period and 2
s.
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 Spring '10
 Smith
 Physics, AP Physics, Height, Orders of magnitude, The Swing, 2 seconds

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