Calculating Buoyancy to Find a Polar Bear's Mass

AI Thread Summary
To calculate the mass of a polar bear partially in water and on ice, one must consider the buoyancy forces acting on both the bear and the ice slab. The amount of the bear submerged in water affects how much water is displaced, which in turn influences the ice's buoyancy. The discussion highlights the need for specific measurements, such as the extent to which the ice sinks and the specific gravity of the ice, to arrive at an accurate calculation. The bear's specific gravity is noted to be 1.0, indicating it is the same as water. Without additional data, a precise answer cannot be determined.
thegreatone
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Buoyancy ... HELP NEEDED

A polar bear is partially in water and partially on a slab of ice. The ice sinks to some extent. Calculate the bear's mass.

How can this be done?

I know it comes down to forces but how . . .
 
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Not forces - it will come down to how much of the bear is in the water and how much is out of the water. However much is out of the water will directly add to the mass of the ice slab, causing it to sink lower, displacing that much more water.

Of course, you can't answer this question without more information (unless you are merely providing an algebraic answer.)
 
70% is out of the water
voume of the ice is 10m^3
bear's specific gravity is 1.0
 
someone please help ... please
 
help anyone :confused:
 
You still haven't given us enough information: the ice sinks "to some extent". How much?
The bear's specific gravity is exactly the same as water? What is the specific gravity of the ice?
 

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