Archimedes' Principle
Online calculator — enter the values and get the result instantly, with the formula and a worked example.
Fv = FG + Fvz
Fv - resulting force,
FG - gravitational force,
Fvz - buoyant force
A body submerged in a fluid is buoyed up by a force equal to the weight of the fluid displaced by the submerged part of the body.
The body experiences a gravitational force FG acting vertically downward and, when submerged in a fluid, a buoyant force Fvz acting vertically upward. The resultant of these forces is the force Fv = FG + Fvz. Usually, the direction of the gravitational force is chosen as positive and the direction of the buoyant force as negative.
Buoyant force F
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| Liquid density ρ | – |
| Volume of submerged part V | – |
| Buoyant force F | – |
A body submerged in a liquid is pushed upward by the buoyant force F.
Worked example
The weight of the object is 1 kg and its volume is 1 m3. The density of water is 1000 kg/m3.
