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Archimedes' Principle on a Body in Water

Hi. Can someone please walk me through how to do the following problem?

A person with a mass of 81 kg and a volume of 0.089 m^3 floats quietly in water.

(a) What is the volume of the person that is above water?
(b) If an upward force F is applied to the person, the volume above water increases by 0.0018 m^3. Find the force F.

Solution Summary

The solution attaches a document containing very clear thorough explanation of how to do each problem of this question on the Archimedes' Principlem of upward force acting on a buoyant person in water.