Question Regarding Coefficient of Friction

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SUMMARY

The discussion centers on the relationship between the angle of inclination and the coefficient of friction when a 50lbs part slides on parallel shafts. It is established that rotating the shafts can potentially reduce the coefficient of static friction, allowing for a lower angle of inclination. The participants agree that while the coefficient of kinetic friction may not decrease, the elimination of static friction through shaft rotation can facilitate movement at a reduced angle.

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klsizemore
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I have a part that will slide by it's own weight (50lbs.) at 12 degrees on two parallel shafts. I need to reduce the angle as much as possible. By rotating the shafts, I would reduce the coefficient of friction between the part and the shaft. How would I find the new value of friction due to the shaft rotating?
 
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I'm not convinced it would reduce the coefficient of kinetic friction but I could be wrong.

The coefficient of static friction is usually higher than that of dynanic friction. (eg it takes more force to get something moving then to keep it moving). So spinning the shafts may allow the angle to be reduced by eliminating static friction.
 

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