Damped Pendulum Oscillations

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Revision as of 15:33, 21 April 2013 by Ist165721 (talk | contribs)
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Description of the Experiment

The purpose of this experiment is to determine the friction constant in a oscillating round motion.


Experimental Apparatus

The pendulum is launched, and the user can choose the length of the rod and the initial angle. The pendulum's rod is attached to the head of a salvaged hard-drive. This allows a measuring of the pendulum's angular velocity, as a function of time.


Protocol

Figure 1: Data without any active friction, maximum samples and maximum sample rate.
Figure 2: Fitting of a damped sine to the three first periods. The friction constant is, in this case, \(0.0122 s^{-1} \).

Under construction.


Advanced Protocol

The oscillation period decreases, even though the first three do not show this. (Why?) Find the mathematical expression that explains this behavior and fit it to the experimental data. Change the friction parameter and find the new friction constant.


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