Inclined Planes; Finding Force of Friction

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Homework Help Overview

The problem involves a box sliding down a frictionless inclined plane, with a focus on understanding the force of friction in this context. The original poster expresses a desire to find the force of friction despite the problem stating that the surface is frictionless.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to calculate forces acting on the box and expresses confusion about the relevance of friction in a frictionless scenario. Some participants clarify that the definition of friction does not apply here due to the absence of friction.

Discussion Status

The discussion includes attempts to clarify the nature of friction in a frictionless environment. While some participants provide guidance on the definition of friction, the original poster indicates a realization about the nature of the problem, suggesting a shift in focus.

Contextual Notes

The original poster initially seeks help with a misunderstanding regarding the presence of friction in a frictionless scenario, which is a key assumption in the problem statement.

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Homework Statement


A 275 N box is sliding down a frictionless inclined plane. If the incline makes an angle of 30.0 degrees with the horizontal, what is the acceleration along the incline?

I don't need to know how to figure out the solution to this problem - yet, atleast.
Im trying to figure out how to find the Force of friction.
Could anyone help me out on this?

Through my calculations, i have determed:
Fg = 275 N
F[Parallel] = 157.73 N
mass = 28.03 kg
 
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The force of friction is defined to be [tex]\mu \mathbf{N}\text{ where } \mu \text{ is the frictional constant and } \mathbf{N}[/tex] is the normal force. But there is of course no friction involved in this problem.
 
..yeahhhh...okkay?
Im trying to figure it out without that formula..
 
Hmm, I'm confused as to what you're asking then.
 
If they say that the surface is frictionless, that means that the frictional force is zero.
 
Ah crap. i think i might have posted the question above the question i actually needed. But k nvm i figured out the answer :) Thanks anyways guys
 
No problem at all.
 

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