What is the buoyant force acting on the object?

Answer 1

Bouyancy force can be described as a force exhibited by fluids that opposes gravity. Bouyancy force is equal to the weightof fluid displaced by an object immersed in that fluid and is thus dependent on the presence of gravity. Under conditions of weightlessness there is no bouyancy force.

Answer 2

The buoyant force of air is similar to that of water. Both air and water are fluids, and things in them will be subject to the force of buoyancy. Let's look at air. Air is all around us, and the gas mixture exhibits a given pressure on our bodies. If we ascend, the density of the air around us will begin to decrease. As we go higher, the air gets "thinner" with each meter. The air will be exerting less and less pressure on us as we ascend. We really won't feel it much, but we'll notice it as we breathe. It's different for a balloon filled with helium. If we inflate a balloon with helium, the balloon will confine the inert gas inside it, and the pressure across the balloon (the membrane or "skin" of the balloon) will equalize. But the density of the helium inside the balloon will be less than the density of the air around it. The helium balloon will not have as much mass as an equal volume of that air around it. This makes the balloon "lighter" that the air around it, and buoyancy (the buoyancy of air) kicks in and the balloon rises. We've all played with helium balloons, or at least seen them. They're straining on the string or ribbon tied to them and trying to "get away" and go up into the air. The buoyancy of the air is exerting a force on the balloons to push it up.

Answer 3

Buoyant force is the upward force or thrust... Simply, consider immersing your hand inside a bucket of water.... The hand basically comes up (a little) if you just leave your hand... This is due to the buoyant force.... Basically that is the upward force/thrust that acts on any body that is immersed into a fluid....

Answer 4

"Buoyant" basically means the ability to float. Buoyancy occurs whenever:

Weight of object = Force of fluid pushing it upward.

This can happen either on or below the surface of liquid. For example, when a piece of wood falls into the water, it goes down due to gravity but as the buoyant force of the water equals the weight of the wood, it floats up.

In connection with this, it is worth mentioning about great scientist Archimedes' Principle:

It states that an object immersed in a fluid will experience "Buoyant Force", which is equal to the weight of water displaced.

Buoyant Force = Weight of water displaced

Answer 5

Bouyant forces on an object act in the direction where the pressure of the liquid is lower. Usually with the case of a liquid on earth, that direction is against the direction of the gravitational field, ie upwards.

Answer 6

The pressure pushing down on an object compared to the pressure pushing up on the bottom of an object

Answer 7

The upward force on objects in a fluid.

This is also sometimes called buoyancy.

Answer 8

Hot air balloons and boats. Really, anything that floats on water is an example of buoyancy force.

Answer 9

the upward force exerted on an object immersed in or floating on a liqiud

Answer 10

to the weight of fluid that the object is displacing with its volume.