Experimental Determination Among Available Theories Describing the Drag Force Exerting on Steel Spheres and Cu and Al Cylinders Moving in a Viscous Fluid

Chen, Shan-Tarng; Wang, Shu-Chin

doi:10.1088/0031-8949/70/6/004

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2010

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“…but the expression applies if the mass is oscillating in a container of infinite dimensions; for the physically realizable case of a finite container, a correction term is added 16 ,…”

Section: Theorymentioning

confidence: 99%

Investigating viscous damping using a webcam

Shamim¹,

Zia²,

Anwar³

2010

American Journal of Physics

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We describe an experiment involving a mass oscillating in a viscous fluid and analyze viscous damping of harmonic motion. The mechanical oscillator is tracked using a simple webcam and an image processing algorithm records the position of the geometrical center as a function of time. Interesting information can be extracted from the displacement-time graphs, in particular for the underdamped case. For example, we use these oscillations to determine the viscosity of the fluid. Our mean value of 1.08 \pm 0.07 mPa s for distilled water is in good agreement with the accepted value at 20\circC. This experiment has been successfully employed in the freshman lab setting.Comment: 13 pages, 5 figure

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“…but the expression applies if the mass is oscillating in a container of infinite dimensions; for the physically realizable case of a finite container, a correction term is added 16 ,…”

Section: Theorymentioning

confidence: 99%