How Do You Calculate the Coefficient of Friction for a Skier on an Incline?

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Homework Help Overview

The problem involves a skier moving up a 20° incline and coming to rest after traveling a distance of 11.4 m. The objective is to calculate the average coefficient of friction affecting the skier's motion.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the application of energy conservation principles and the relationship between work done against friction and the skier's motion. There are questions about the interpretation of the distance traveled along the slope versus height.

Discussion Status

Some participants have provided guidance on clarifying the distance traveled along the slope, which may assist in applying the energy equation. There is an ongoing exploration of how different variables relate to the calculation of the coefficient of friction.

Contextual Notes

There is uncertainty regarding the interpretation of the distance (11.4 m) as either height or distance along the slope, which may affect the calculations and assumptions made in the discussion.

sourna
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Homework Statement


A skier traveling 12.6 m/s reaches the foot of a steady upward 20° incline and glides 11.4 m up along this slope before coming to rest. What was the average coefficient of friction?

Homework Equations


Egi+Eki+wnc=Egf+Ekf

The Attempt at a Solution


I solved for everything but i don't know how to solve for mew
 
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sourna said:

Homework Statement


A skier traveling 12.6 m/s reaches the foot of a steady upward 20° incline and glides 11.4 m up along this slope before coming to rest. What was the average coefficient of friction?

Homework Equations


Egi+Eki+wnc=Egf+Ekf

The Attempt at a Solution


I solved for everything but i don't know how to solve for mew
Can you show what you did with the equation by using the given information? Also, you'll need to think about how wnc is related to friction.
 
Redbelly98 said:
Welcome to Physics Forums.

Can you show what you did with the equation by using the given information? Also, you'll need to think about how wnc is related to friction.
is it ok if i say no? I don't understand it very well you see because I am not sure if 11.4 m is height or distance. :confused:
 
Okay. 11.4 m is the distance along the slope, not the height. That should help you with finding Egi and Egf in the equation you wrote earlier.
 

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