Finding the Coefficient of friction on an incline plane

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Homework Help Overview

The discussion revolves around determining the coefficient of friction on an inclined plane, specifically focusing on the relationship between the angle of inclination and the coefficient. The original poster seeks guidance on the equation necessary for their lab procedure.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants explore the equation for the coefficient of friction, with some referencing the use of trigonometric functions to relate the angle of inclination to the coefficient. Questions arise regarding the validity of the equation mu = tan(theta) and its applicability in different contexts.

Discussion Status

The discussion is active, with participants sharing equations and questioning their correctness. Some guidance has been provided regarding the forces acting on the mass, but there is no explicit consensus on the validity of the proposed equations.

Contextual Notes

Participants note the need for specific measurements, such as the angle and mass, and mention the use of tools like a protractor and scale. There is an underlying uncertainty about the assumptions related to the forces acting on the object.

Trent Horn
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I need to find the coeffcient of friction on an incline plane. I need the equation to find the coefficient for any givien angle. It part of a lab where I'm required to create the procedure and am stuck with how to create the equation. We can use a protractor or trigonomic functions to find the angle and the mass of the object can be found with a scale.
 
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Show me the equation for the coefficient if you don't have an incline?
 
Well, mu = tan(theta) is sometimes used. Depends though.
 
thanks watermelon that was the equation i couldn't get too that equation because i didnt have the trig functions to get there.
 
Maybe I don't understand what is going on, but it seems to me that mu = tan (theta) is just plain wrong.
 
Assuming the only forces acting on the mass are gravity, the normal force, and friction, then it is true. SumF = mgsin(theta) - mu*mgcos(theta) = 0.
 

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