125 Physics Projects for the Evil Genius by Silver Jerry

Author:Silver, Jerry [Silver, Jerry]
Language: eng
Format: epub
Publisher: McGraw-Hill
Published: 2009-03-20T14:00:00+00:00

Method

Set up a basic pendulum with a measured length and mass free to swing.

Pull the pendulum back to the side through a small (less than 15 degrees) angle and get the stopwatch ready.

Release the pendulum and start the stopwatch as the pendulum is released.

Count ten cycles back and forth. Cycle number one is when the pendulum returns to its original position. Be careful not to count “one” when the pendulum is released.

The length of the pendulum is the distance from the point where the string is supported to the center of the mass.

Record the time (in seconds) for the pendulum to complete ten complete cycles.

Divide the time for ten cycles by ten to get the time for one cycle or the period of the pendulum for the conditions you are testing.

You can proceed in several ways at this point, with many opportunities to develop your own plan. Here are a few suggestions:

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