# Free body Diagram Help

1. Nov 4, 2007

### crcowboyfan

1. The problem statement, all variables and given/known data

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!

2. Relevant equations

N/A

3. The attempt at a solution

N/A

2. Nov 4, 2007

### 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

3. Nov 4, 2007

4. Nov 4, 2007

### crcowboyfan

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

Thanks for the help

5. Nov 4, 2007

### robphy

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?

Last edited: Nov 4, 2007
6. Nov 4, 2007

7. Nov 4, 2007

### crcowboyfan

Thanks for the examples!

8. Nov 4, 2007

### crcowboyfan

Are weight and gravity used interchangeably?

9. Nov 4, 2007

### rocomath

10. Nov 4, 2007

### crcowboyfan

Ok so how does this look?

Last edited: Nov 4, 2007
11. Nov 4, 2007

### rocomath

how does what look?

lol

12. Nov 4, 2007

### crcowboyfan

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

13. Nov 4, 2007

### rocomath

can't see it ... way too small