回複：隻要是"勻"就無變化.

來源: 布衣之才 於 2010-10-16 13:57:11 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (375 bytes)
回答: 隻要是"勻"就無變化. 由 jinjing 於 2010-10-16 11:00:21

let m be the mass of the wood block, d the density of water, and v1 the volumn of water the block repells under the gravity g1 and v2 the volumn of the repelled water under gravity g2.

mg1 = v1 d g1

mg2 = v2 d g2

so v1 = v2.

Ther is no change in the water volumn repelled by the wood block. 

 

 

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