Force acting on a block against a wall

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Homework Help Overview

The problem involves a 1.0 kg wood block pressed against a vertical wall at a 30-degree angle by a 12N force. The context includes considerations of static and kinetic friction, with given coefficients of friction.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the setup of the free body diagram and the inclusion of gravitational forces. There are inquiries about how the coefficients of friction influence the potential movement of the block.

Discussion Status

The discussion is ongoing, with participants seeking clarification on the free body diagram and the forces involved. Guidance has been offered regarding the importance of including all forces and considering the direction of potential movement.

Contextual Notes

Participants have noted the absence of images in the thread, which may hinder understanding. There is also a focus on ensuring all relevant forces are accounted for in the analysis.

phm
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Homework Statement


A 1.0 kg wood block is pressed (30 degrees) against a vertical wood wall by a 12N force as in the picture. If the block is initially at rest, will it move upward, downward, or stay at rest? In the book, it gives the us as 0.50 and the uk as 0.20.
Untitled.jpg

Free Body Diagram:
Untitled1.jpg


Homework Equations





The Attempt at a Solution


How do I solve this problem using static and/or kinetic friction?
 
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If you put up your images on a hosting website (like flickr or photobucket, etc) it will be much easier since your attachments still haven't been approved and we won't be able to see them until they are.

Or you could just describe it?
 
http://s245.photobucket.com/albums/gg65/darlieally/?action=view&current=Untitled.jpg
It's supposed to say 30degrees

And then the free body diagram (which I am not quite sure that I have done properly):
http://s245.photobucket.com/albums/gg65/darlieally/?action=view&current=Untitled1.jpg

Can you see these?
 
Last edited by a moderator:
Or if you can't see those...
http://s245.photobucket.com/albums/gg65/darlieally/?action=view&current=Untitled1.jpg"

and

http://s245.photobucket.com/albums/gg65/darlieally/?action=view&current=Untitled.jpg"
 
Last edited by a moderator:
Have you included gravity in your FBD? Once you have all of your forces for the FBD, look at which way the box could possibly move. You have the values of all of the forces including coefficients of friction, so how do these come into play?
 

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