# ch 9 - chapter 9 biomechanics Study online at...

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1. buoyancy "what makes us float" 2. buoyant force a vertical, upward direction force acting upon an object that is submerged or partially submerged in a fluid. 3. always goes up buoyant force always goes in what direction? 4. archimedes' principle a body submerged in a fluid will be buoyed up by a force that is equal magnitude to the weight of the displaced water. 5. archimedes' principle "easiest way to measure is fill container to top, put object/person in, and whatever water comes out weight it and thats the buoyant force" 6. 1. weight of object (mass) 2. amount of water it displaces (volume) Archimedes' principle is based on 2 considerations.. 7. density Relationship of mass to volume is called 8. specific gravity ratio of density of a given substance to density of water 9. positive object with a specific gravity of <1.0 will be ____ buoyant 10. negative object with specific gravity of >1.0 will be _____ buoyant 11. center of mass location on body where cardinal planes pass through and gravitational pull is found. 12. a ball shaped volume of water A submerged ball displaces a _____________ 13. a human shaped body of water A submerged human displaces a __________ 14. center of buoyancy COG of the volume of water displaced by an object 15.

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