Why Is My Coefficient of Friction Negative?

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Homework Help Overview

The discussion revolves around a lab experiment involving the coefficient of friction for an object on an incline, specifically focusing on a scenario where the calculated coefficient of kinetic friction is negative.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants are questioning the validity of a negative coefficient of friction and whether such a value is possible. There is also a request for the original poster to share their calculations to facilitate further assistance.

Discussion Status

The conversation is ongoing, with participants exploring the implications of a negative coefficient of friction and considering potential errors in the setup or calculations. Some suggestions have been made regarding the orientation of the incline.

Contextual Notes

There is an implicit assumption that the calculations should yield a non-negative coefficient of friction, and the discussion hints at the need for clarity on the experimental setup.

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Homework Statement



I just did a lab at school dealing with coefficient of friction for an object on an incline. After all my calculations done, my answer is negative for a cart sliding down, dealing with kinetic friction.

Homework Equations





The Attempt at a Solution



I have checked all my calculations and have found nothing wrong.
 
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Well how can we help unless you show us your calcs??
 
My question is whether the coefficient of friction can be negative?
 
Did you turn the ramp around so the angle was in the 2nd quadrant?
 

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