Science Buddies: "Ask an Expert"

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

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