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scott keller
01-02-2010, 8:40 AM
Kids might like these. Or maybe you could use the as giveways.

Here is a link to a bigger picture to download.

http://blog.modernmechanix.com/2009/04/30/swami/

Randy Digby
01-02-2010, 10:19 AM
Thanks. Haven't seen one of those in years!

Tom Bull
01-02-2010, 1:15 PM
Here are a couple of vectors, 1 with face cut out, one plain. Not enough skill to draw the face, sorry

Doug Griffith
01-02-2010, 1:31 PM
http://blog.modernmechanix.com/2009/04/30/swami/

That makes for an interesting read. There's some good geek-speak going on.

Dee Gallo
01-02-2010, 2:10 PM
Funny coincidence... my husband just pulled out his "magic hook" during a discussion with someone. He made it about 40 years ago, with a coping saw. He's kept it handy all these years and still plays with it once in a while... it IS amazing. And now that he is interested in barn reconstruction, it really helps to understand load bearing and weight distribution issues. Not to me, of course, but that's not my area.

:) dee

Bill Cunningham
01-05-2010, 10:22 PM
We used to call that a 'SkyHook' Made hundred as give-a-ways (not hundreds$ hundreds of skyhooks..ha)

pete hagan
01-06-2010, 12:26 AM
I haven't seen this since I was a kid. We do demonstrate this basic physics phenomenon even in elementary classrooms here in Kentucky. It is a simple matter of center of gravity with the center below the finger which is why it seems so magical. Yes it requires a stiff belt with this device as it needs the angle from the slot to locate the weight of the belt below the finger. I have a store bought demonstrator that does the same thing but in a different manner. It is a bird which balances on its beak. The wings are swept forward past the beak and have weights. An easy and fun demonstration with the kids requires three tooth picks two large marshmallows and one small marshmallow. Break one toothpick in half and stick it into the small marshmallow dead center of a circle side as shown in the illustration. Add the counter weight marshmallows as shown. Then balance on your finger…simple fun and they get to eat the treat!

I'll have to cut a few of the "Skyhooks" for demonstrating now that I have the file. THANKS!!!

http://petehagan.com/science/COG1.gif