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Investigating viscous damping using a webcam
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View: Figures


Image of Fig. 1.
Fig. 1.

Schematic diagram of the experimental setup. The apparatus is adjusted so that the mean position of the spherical mass is in the horizontal line of sight of the webcam.

Image of Fig. 2.
Fig. 2.

Typical frames after processing. The images are cropped to show only the region of interest.

Image of Fig. 3.
Fig. 3.

Damping in a jar of honey depicting overdamped simple harmonic motion and the varying rates of approach toward equilibrium. The parameters are (a) , , , and ; (b) , , , and ; and (c) , , , and .

Image of Fig. 4.
Fig. 4.

(a) Damped simple harmonic oscillations versus time. The fit parameters are , , and . (b) Fluctuations in the area of the white sphere versus time.

Image of Fig. 5.
Fig. 5.

Plot of the time lapse between successive frames in a typical run of the experiment. The recorded frames cluster in two groups. One is the group of frames that are acquired at or near the nominal frame rate of , and the second is the frames that are delayed by twice the sampling time, ; the latter represents dropped frames. We use the actual time values in our experiment instead of an average time.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Investigating viscous damping using a webcam