What factors need to be considered when calculating bouyancy?

Question

For example, does weight of the object matter? Does density of the fluid matter? Does size of the object matter? Thanks for your help.

Answer 1

DENSITY is the key.

Remember, an aircraft carrier will float in water because it is less dense than the water. To calculate density, divide mass - kilograms (m) by volume - cubic meters (v).

Pure water at 25 degrees Centigrade has a density of 998 kg/m^3 so any object with a density lower than this would float. Higher would sink.

Interesting note: If you could find a body of water large enough, the planet Saturn would actually float in it since it is less dense.

Answer 2

Relative density of the object and the medium are the most important thing and the previous answers address that.

Howver , also usually important in a real situation is the concept of "center of bouyancy." Once you have satisfied yourself that an object will float (density of the object < density of the fluid) the next question is in what orientation will it float. The stable floating position is one where the center of mass of the object is in the lowest position. In any other orientation, the object will rotate - flip over, potentially.

When designing a ship, for example, it is of the greatest importance to keep the center of buoyancy below the waterline. Otherwise the ship will capsize.

Answer 3

The big factor is density.

It's the density of the object with respect to the density of the liquid.
If the density of the object is less then the density of the liquid, then the object will float.
If the density of the object is greater then the density of the liquid, then the object will sink.

Weight (mass) is a factor of density. So indirectly it's affects buoyancy.
Size of object will dictate it's weight (mass) and so it's indirectly affects it's buoyancy.

Answer 4

i think density and mass

Answer 5

cup size and natural-to-prostethic ratio