Purpose: To experimentally determine a model for air resistance of an object. This will be compared with the theoretical model.
Procedure: A laptop was setup on the stairs of the design center, facing the second story balcony. The laptop screen was positioned vertically and parallel to the balcony. The webcam was used to record the decent of a coffee filter. A meter stick was held vertically to provide a scale for the captured video. The drop was repeated for 1 through 5 coffee filters. The video recorded, was analyzed using Logger Pro. The meter stick was used to scale the captured video. the video was advanced to where the filter was free falling. In every third frame of video following, the position of the bottom of the coffee filter was selected to create a set of data points, for the position of the coffee filter as it fell.
Data Analysis: The graph of the position showed the filter falling faster until the terminal velocity was approximated. The terminal velocity was observed by the graph approaching a straight line, where the slope indicates the velocity of the coffee filter. Logger pro was used to do a linear fit of the filter once it reached terminal velocity.
Conclusion: This showed the power of the
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