Need Formula for Surface Tension

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deleted-84451
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Joined: Wed Nov 10, 2010 9:46 am
Occupation: Student
Project Question: Does adding more magnets to a simple motor increase or decrease the rate at which it spins?
Project Due Date: January 18, 2011
Project Status: I am conducting my experiment

Need Formula for Surface Tension

Post by deleted-84451 »

I went on ScienceBuddies to get the formula which is F=2sd where F is force, s is surface tension, and d is the legth of the needle. I know how to get the F and d, but I need to have the s which is the actual surface tension alone.But I don't know how to do this!

Any help with this is greatly appreciated :D
deleted-71417
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Posts: 932
Joined: Wed Oct 03, 2007 12:24 am

Re: Need Formula for Surface Tension

Post by deleted-71417 »

Hi,

If you know F and d you can find s. It is s= F/2d.

The Science Buddies experiment on this is

https://www.sciencebuddies.org/science- ... p012.shtml

You can check out the reference links in the Bibliography section for more information Yiu nay also be interested in this wikipedia article on surface tension:

https://www.sciencebuddies.org/science- ... p012.shtml

Best Regards,

Barrett L Tomlinson
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