Free Body Diagram Examples and Tips for a Simple Assignment | Homework Help

[crcowboyfan]

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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[hotcommodity]

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

 

[robphy]

https://www.physicsforums.com/blog/2007/09/27/my-first-sketchcast-free-body-diagram/

 

[crcowboyfan]

Ok, but could you give me a real life situation that would be appropriate to make a FBD for?

Thanks for the help

 

[robphy]

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?

 

[rocomath]

visit my blog for some examples

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

a person in an elevator would be interesting, try that :-]

 

[crcowboyfan]

Thanks for the examples!

 

[crcowboyfan]

Are weight and gravity used interchangeably?

 

[rocomath]

no.

http://en.wikipedia.org/wiki/Weight
http://en.wikipedia.org/wiki/Gravity

weight = mass x gravity

 

[crcowboyfan]

Ok so how does this look?

 

[rocomath]

Ok so how does this look?http://picture.vzw.com/mi/216060688_719998182_0.jpeg

how does what look?

lol

 

[crcowboyfan]

how does what look?

lol

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

http://img505.imageshack.us/img505/7315/2160606887199981820qx5.th.jpg

 

[rocomath]

can't see it ... way too small