# Archimede's Principle

## Homework Statement

An unknown fluid is placed in a bottle and then placed in a beaker of water where it displaces x amount of water. The unknown fluid is then frozen into a block and a greater proportion of this substance is now submerged, what does this say about the change in density?

## The Attempt at a Solution

Am I right in thinking the density increases, there is no mention of what happens to the volume of the substance or the volume displaced???

## Answers and Replies

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tiny-tim
Science Advisor
Homework Helper
hi bobred!

well, you titled this Archimedes' Principle, how how about using the principle in your answer?

Yeah! bobred read the the statement of Archimede's principle carefully, you'll surely be able to solve then.

At equilibrium I have

$$\frac{V_0}{V}=\frac{\rho}{\rho_0}$$

what is confusing me is what happens to the unknown substance when it is frozen, does it expand or contract and therefore change the density $$\rho$$