Free body Diagram Help

  • #1

Homework Statement



Hey guys. My Physics teacher gave us an assignment to make a Free Body Diagram poster. He didn't give us any specifics, just told us that we can do whatever we want. I'm a little confused as to what I should do and how to make one of these. Could you give me an example of a pretty simple FBD and how to make it?

Thanks!

Homework Equations



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The Attempt at a Solution



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Answers and Replies

  • #2
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In a free body diagram, you want to specify one object and separate it from everything else, hence the name "free-body." It would be good to indicate any forces acting on that body. Typical forces are the normal force and the weight force. It's also good to specify a coordinate system in your diagram. For a visual you can look here: http://en.wikipedia.org/wiki/Free_body_diagram
 
  • #3
robphy
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https://www.physicsforums.com/blog/2007/09/27/my-first-sketchcast-free-body-diagram/ [Broken]
 
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  • #4
Ok, but could you give me a real life situation that would be appropriate to make a FBD for?

Thanks for the help
 
  • #5
robphy
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Ok, but could you give me a real life situation that would be appropriate to make a FBD for?

Thanks for the help

Suppose you sit on a frictionless slide in a playground.
Determine the forces applied on you [which can be used to predict your motion].

You might want to consider your preference of a steep slide vs. a not-so-steep slide.
How would you analyze these choices?
 
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  • #6
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visit my blog for some examples

http://www.mathlinks.ro/weblog.php?w=924 [Broken]

a person in an elevator would be interesting, try that :-]
 
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  • #7
Thanks for the examples!
 
  • #8
Are weight and gravity used interchangeably?
 
  • #10
Ok so how does this look?
 
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  • #11
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Ok so how does this look?http://picture.vzw.com/mi/216060688_719998182_0.jpeg
how does what look?

lol
 
  • #12
how does what look?

lol

Oh, it was working before. Let me rehost it.

http://img505.imageshack.us/img505/7315/2160606887199981820qx5.th.jpg [Broken]
 
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  • #13
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can't see it ... way too small
 

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