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Experiment #1 – Density
May 21, 2008
Erin Samplin
Group Member: Catie Destio
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View Full DocumentAbstract
–
The main purpose of this laboratory experiment is to accurately measure the density of
various materials, such as aluminum and lead.
Students will also learn how to use a
vernier caliper and a micrometer caliper to measure both the heights and diameters of
various cylinders.
The density of aluminum was calculated to be 2.65 g/cm
3
, with an
error of 1.85%, and the density of lead was calculated to be 9.23 g/cm
3
, with an error of
18.32%.
Possible errors include gross error, systematic error, and random error.
Discussion
–
Diagram
Equations
M = D x V
where M = mass, D = density, and V = volume.
V
c
= πR
2
H = πD
2
H/4
where V
c
= volume of a cylinder, R = radius, H = height, and D = diameter.
Graph
The standard equation for a straight line is y = mx+b where m = slope. Substituting the
equation for density into this standard equation, mass will be placed on the yaxis and
volume will be placed on the xaxis.
The slope of the line will represent the density.
A
graph of mass versus density was thus constructed. From the slope of the graph, the
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 Summer '08
 GARUTHARA

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