Coefficient of Friction when applied force is not horizontal to surface?

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Homework Help Overview

The discussion revolves around the effects of an applied force that is not horizontal to the surface on the coefficient of friction. Participants are exploring the relationship between the direction of the applied force and frictional forces in different orientations.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Some participants express uncertainty about how to approach the problem, questioning the existence of friction on vertical surfaces. Others clarify that friction can exist on vertical surfaces and discuss the relationship between the applied force, normal force, and frictional force.

Discussion Status

The discussion is ongoing, with participants providing insights into how the coefficient of friction is dependent on the materials in contact and the normal force. There is an exploration of vector resolution when the applied force is at an angle, indicating a productive direction in the conversation.

Contextual Notes

Participants are considering the implications of applying force at various angles and the resulting changes in normal force, which may affect the frictional force experienced. There is a mention of resolving vectors, suggesting a need for clarity on the geometric aspects of the problem.

CharmedForever
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Homework Statement



What would happen to the coefficient of friction if the applied force was not horizontal to the surface?

Homework Equations


Ff=[tex]_{\mu}[/tex]Fn

The Attempt at a Solution



I am unsure of how to proceed with this question, but I am thinking that you can't have friction against a vertical surface.
 
Last edited:
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Last edited:
CharmedForever said:
I am unsure of how to proceed with this question, but I am thinking that you can't have friction against a vertical surface.

Frictional force may certainly exist on a vertical surface.

CharmedForever said:
What would happen to the coefficient of friction if the applied force was not horizontal to the surface?

If by horizontal you mean normal to the surface then...

Ff = mu*Fn

Does Ff remain constant? No...it varies with mu and Fn. So what is mu dependent on? The two surfaces in contact! As the normal force changes, only the resultant frictional force varies, the coefficient of friction is constant between two surfaces and depends on the materials properties.
 
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Well if u r nt apllying force in the horizontal direction u cn apply it in vertical direction bt if u aplly it perpendicular no friction takes place ! bt if u apply it with an angle u need to resolve vectors od cosθ and sinθ and hence find ur ans
 

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