Buoyancy, surface tension, density

File: 52 KB, 570x380, tension.jpg [View same] [iqdb] [saucenao] [google]

Buoyancy, surface tension, density Bill Mon Sep 29 19:11:58 2014 No.6783503 [Reply] [Original]

Why is it when a glass was overflowing with water (just about to spill, surface tension creates the "dome" of water on the surface), the paperclip always stayed near the side of the glass while the Styrofoam always stayed around the centre. These results were flipped when the glass was filled partway with water.

>>	Anonymous Mon Sep 29 19:15:04 2014 No.6783510 vanderwalls

>>	Anonymous Mon Sep 29 19:18:08 2014 No.6783514 Styrofoam floats and seeks the highest point Paper clip doesn't float and seeks the lowest point

>>	Anonymous Mon Sep 29 19:21:37 2014 No.6783519 meniscus

>>	Anonymous Mon Sep 29 19:35:54 2014 No.6783543 the key difference here is that paper clips float only because of water tension and not because of buoyancy. Styrofoam actually will float back to the top even if it's fully submerged, but a paperclip will just sink to the bottom.

>>	Anonymous Mon Sep 29 19:48:59 2014 No.6783561 File: 52 KB, 380x263, goodform1.gif [View same] [iqdb] [saucenao] [google] >>6783543

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