# Buoyant Force

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## buoyant force

[′bȯi·ənt ′fȯrs]
(fluid mechanics)
The force exerted vertically upward by a fluid on a body wholly or partly immersed in it; its magnitude is equal to the weight of the fluid displaced by the body.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

## Buoyant Force

(buoyancy), the upward force that is the resultant of the pressure forces of a fluid on the surface of a body completely or partially immersed in the fluid. According to Archimedes’ principle, it is equal to the weight of the fluid that would fill the space occupied by the immersed portion of the body. The floating of bodies and of such structures as ships, boats, aerostats, and buoys is due to the buoyant force.

References in periodicals archive ?
HVAC designs with Archimedes number smaller than one can overcome the upward buoyant forces and reduce the entrainment in the space.
Considering olive fruits in water, the forces acting on the sample will be the gravitational force (Fg) acting downward, buoyant force (Fb) acting upward, and drag force (Fd) acting opposite to the direction of motion.
There are other factors that need to be considered when calculating the buoyancy of an object such its surface area, and the buoyant forces vs.
problem of comparing the magnitude of buoyant force on two objects:
The buoyant force grows as the warm air inside |he balloon becomes less dense.
Every cubic meter of helium in balloons gives enough buoyant force (upward force on an object immersed in air or liquid) to lift 1 kilogram (2.2 pounds) of matter.
12) that one cubic meter of helium has enough buoyant force to lift about 1 kilogram (2.2 pounds).
The buoyant force of helium can lift about one gram per liter of the gas.
When the buoyant force on a bubble overcomes surface tension, it will rise to the surface and pop.
This creates an upward force, or buoyant force, which acts opposite to Earth's downward pull of gravity.
As long as this buoyant force is equal to or greater than the weight of the ship, it will counteract the downward push of the ship's weight and keep the vessel afloat.

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