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Archimedes’ Principle and Density Measurements
Laboratory #6
Michael Dark
Section 106
Ashley Pearson
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View Full Document Purpose
The purpose of this lab is to use direct measurement and Archimedes’ principle to
determine the density of a number of different solids and liquids.
Theory
The density of a substance is defined by
Density = m/V
where m is the mass and V is the volume.
The buoyant force exerted by a fluid on an object is defined by
F
B
= m
fluid displaced
*
g = Density
fluid
V
fluid displaced
* g
Where m is the mass of the fluid displaced, g is gravity, and V is the volume of the fluid
displaced.
F
apparent weight
= (Density
object
– Density
fluid
) * V * g
Where V is the volume of the fluid and g is the gravity.
Procedure
We began the experiment with the direct measurement method for the density of a
solid.
We filled the overflow can with water up to the point before water spilled out of
the spot.
We placed a calibrated beaker underneath the spout and lowered a metal block
into the water.
As water was forced out of the spout and into the calibrated beaker, we
could measure how much water was displaced by the metal block.
We repeated the
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This note was uploaded on 04/07/2008 for the course PHYS 111 taught by Professor Cui during the Spring '07 term at UMBC.
 Spring '07
 Cui
 Physics

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