Re: [Phys-L] sharing an activity re circular motion free-body diagrams

["Anthony Lapinski" <Anthony_Lapinski@pds.org>]

Nice! Thanks for sharing! Of all the things I teach, FBDs are probably the
most difficult for kids. I just finished teaching this topic. It's just F
= ma applied to circles, and they just had Newton's Laws. Still difficult
for many.


Phys-L@Phys-L.org writes:
> Hi All,
>
> I gave my students this assignment today:
>
> http://www.holmdel.k12.nj.us/faculty/pkeller/word%20files/circular%20motion%20free%20body%20diagrams.pdf
>
> We have not started to discuss this material yet, so this was their 
> first look.  And I must say, I enjoyed listening to them working in 
> groups to puzzle this out.  After about 20 minutes, I gave them a hint: 
> I revealed that the pairs all have the same free body diagrams.
>
> Mostly, I am sharing because my students seemed to enjoy working on 
> these and they certainly discussed them enthusiastically.  So if any of 
> you can use this, feel free.  But also, there were two that gave the 
> most trouble.  One I expected, but the other surprised me.  I'll let you 
> guess...
>
> Phil
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