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tigers4
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Homework Statement
A hollow spherical iron shell floats almost completely submerged in water. The outer diameter is 66.0 cm, and the density of iron is 7.87 g/cm3. Find the inner diameter.
Homework Equations
Fb=MG
4/3pir^3=Vsphere
The Attempt at a Solution
Not sure where to begin, I am guessing volume of sphere submerged=V displaced water, but if a certain amount of space in the sphere is massless, how do you calculate the inner diameter? I don't see the connection I guess