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Mass Sliding Down a Rotating Inclined Tube with Friction

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A particle of mass slides from the center of a rotating tube at an angle with a vertical bar. The angular velocity and the friction coefficient determine the direction in which the particle slides.

Contributed by: Enrique Zeleny (September 2012)
Open content licensed under CC BY-NC-SA

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Details

The equation for is

,

with the normal force

.

The conditions for incipient outward and inward motion are, respectively,

,

and

,

for .

Reference

[1] D. T. Greenwood, Advanced Dynamics, Cambridge, UK: Cambridge University Press, 2003.

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