Question

A block of wood is floating in water. The weight of the part of the block above water is one third of the total weight of the block. What is the the part the water by the block of weight of wood, using Archimedes' principle?

Answer 1

The wood is 2/3 as dense as water.

Explanation:

If 2/3 of the block of wood is submerged then

the mass of water displaced by 2/3 of the volume of the block of wood is equal to the mass of the block of wood.

Another way to say this is:

each unit volume of wood can be supported by 2/3 of a unit volume of water.



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