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BennyQuixote
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Homework Statement
Styrofoam has a density of 300 kg/m3. What is the maximum mass that can hang without sinking from a 40-cm-diameter Styrofoam sphere in water? Assume the volume of the mass is negligible compared to that of the sphere.
Homework Equations
FB=poVog
Volume of sphere: 4/3 π r3
p=m/V
The Attempt at a Solution
I tried this:
mo/3.35 m3=300 kg/m3
Therefore,
mo=1005 kg
So,
To find the exact amount of mass added to the Styrofoam sphere to sink in water:
1005k + m2/3.35 m3=1000 kg/m3
Therefore:
m2=2345 kg
This is obviously an obscenely large mass to make Styrofoam sink in water. Any help is appreciated.
Quixote