Physics AP - Density of a Solid (#3)

Problem:
To figure out the density of four objects.

Materials:
Caliper, triple beam balance.

Procedure:
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1. To density the cylinder with a hole you have to measure the
   cylinder's diameter, length, inside diameter, and depth of the
   hole using the caliper.  Next measure the mass on the triple beam
   balance.
2. To density the whole cylinder you must measure the cylinder's
   diameter, and length. Then measure the mass on the triple beam
   balance.
3. For the density of the solid rectangle you have to measure the
   length, width, and height.  Next measure the mass of the rect-
   angle.
4. To find the density of the solid ball you need to measure the
   diameter.

Data:           Cylinder  Whole      Solid      Solid
Type            w/hole	  Cylinder   Rectangle	Ball
Diameter        1.91cm    1.60cm     ----       1.90cm
Length          6.2cm     2.4cm      5.0cm      ----
Width           ----      ----       2.6cm      ----
Depth/height    4.79cm    ----       1.29       ----
Inside diameter .93cm     ----       ----       ----
Mass            39.9g     13.1g      44.75g     ----

Analysis/Conclusion:
          Cylinder W/Hole
Outside Diameter    Inside Diameter
2r=1.91cm           2r=.930cm
r=9.55cm            r=.465cm
----------------------------------------------------------------------
3.14r²=area         3.14r²=area
2.86cm³×6.20cm=     .679cm³×4.79cm=
1.77e-²L            3.25e-³L
----------------------------------------------------------------------
D=39.9g/1.45e-²L
D=2.75e³g/L

Whole Cylinder      Solid Rectangle      Solid Ball
2r=1.60cm                                2r=1.90cm
r=.80cm                                  r=.950cm
----------------------------------------------------------------------
3.14r²=area         L×W×H=area           3.14=area
2.01cm³×2.4cm=      16.8cm³
4.82e-³L            1.68e-²L
D=13.1g/4.82e-³L    D=44.75g/1.68e-²L
D=2.72e³g/L         D=2.66e³g/L