2kg of wood cannot float on 1kg water.

送交者: cornbug 于 2012-06-18, 10:42:39:

The buoyant force equals to the weight of the displaced volume of the water. There is no way for a 2 kg wood to be afloat on 1 kg water, regarding what float is defined.

If you make the thin film layers of water, the wood, or even a heavier metal could be supported by different mechanisms under some circumstances rather than the concept of buoyant force.

所有跟贴:

Archimedes paradox. It works as long as 1kg water can surround 2kg wood - ASH (273 bytes) 2012-06-18, 11:51:44 (670055)
- That is not precise. - cornbug (89 bytes) 2012-06-18, 12:20:47 (670066)
  - not the depth, the volume submerged (无内容) - pgss (0 bytes) 2012-06-18, 18:36:34 (670113)
第一句跟第二句之间没有任何论证！理想实验就是KURT说的情况，可以浮起。专 - chouqilozi (32 bytes) 2012-06-18, 11:20:51 (670042)
lets do a test - conner (521 bytes) 2012-06-18, 10:57:57 (670031)
there is no "force". - 008 (26 bytes) 2012-06-18, 10:53:50 (670028)
- OK let's talk about the difference in presures that - cornbug (22 bytes) 2012-06-18, 10:57:47 (670030)
  - force is manipulated by people in anyway they want (无内容) - 008 (0 bytes) 2012-06-18, 11:09:25 (670040)
  - archimedes proved that if u integrate all the pressure vectors - pgss (103 bytes) 2012-06-18, 10:59:49 (670034)
    - That is what i have meant. There simply no - cornbug (38 bytes) 2012-06-18, 11:07:36 (670039)
你好好理解下Kurt的贴 - whoami (113 bytes) 2012-06-18, 10:46:50 (670023)
- Thin film water can do a lot of strange thing - cornbug (63 bytes) 2012-06-18, 10:56:09 (670029)
  - 比如无摩擦少摩擦轨道，那不是叫阿吉米德浮力 (无内容) - cornbug (0 bytes) 2012-06-18, 11:04:43 (670038)
  - 这里只是考虑理想模型， - whoami (92 bytes) 2012-06-18, 11:03:14 (670035)
  - no one wants a film, a few cm or a few inches all fine (无内容) - pgss (0 bytes) 2012-06-18, 10:58:06 (670032)

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