Finding acceleration of snow boarder

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Discussion Overview

The discussion revolves around calculating the acceleration of a snowboarder moving up a slope, specifically a 5.5° incline, while considering the coefficient of friction for waxed wood on wet snow. The context includes elements of a homework problem and the application of free body diagrams to analyze forces acting on the snowboarder.

Discussion Character

  • Homework-related
  • Technical explanation

Main Points Raised

  • One participant presents the problem of calculating the snowboarder's acceleration, specifying the slope angle and coefficient of friction.
  • Several participants question whether the problem is a homework assignment or a practice problem.
  • Another participant suggests that a free body diagram should be drawn to visualize the forces acting on the snowboarder, emphasizing the importance of defining a coordinate system.
  • A later reply indicates that the free body diagram provided may not be correct, although no specific corrections are offered.

Areas of Agreement / Disagreement

Participants generally agree on the need to analyze the problem using a free body diagram, but there is no consensus on the correctness of the diagram shared or the classification of the problem as homework or practice.

Contextual Notes

There are limitations regarding the assumptions made in the problem, such as the definitions of forces and the coordinate system, which remain unresolved.

alaa amed
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Consider a snow boarder going up a 5.5° slope. Assume the coefficient of friction for waxed wood on wet snow is μk=0.10 and he is moving in the positive direction.
Calculate the magnitude of the acceleration of the snow boarder in m/s2.
 
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Homework problem?
 
Chandra Prayaga said:
Homework problem?
Practice problem
 
All right. So the procedure is to first draw a diagram showing all the forces on the body, then specifying a coordinate system, which specifies what you mean by "moving in the positive direction." The diagram is called a free body diagram. Once you draw the diagram, we can take the next steps easily.
 
Chandra Prayaga said:
All right. So the procedure is to first draw a diagram showing all the forces on the body, then specifying a coordinate system, which specifies what you mean by "moving in the positive direction." The diagram is called a free body diagram. Once you draw the diagram, we can take the next steps easily.
This is the FBD, but I do not think it's correct.
https://www.facebook.com/photo.php?fbid=832494440189905&set=a.171146579658031.31065.100002880693856&type=3&theater
 

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