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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.
The buoyant force acting on an object immersed in a fluid is equal to the weight of the fluid displaced by the object. It depends on the volume of the object submerged in the fluid and the density of the fluid. The buoyant force helps objects to float or rise in a fluid.
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.
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....
"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
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.
The pressure pushing down on an object compared to the pressure pushing up on the bottom of an object
The upward force on objects in a fluid.
This is also sometimes called buoyancy.
Hot air balloons and boats. Really, anything that floats on water is an example of buoyancy force.
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What determine the buoyant force acting on an object?
The buoyant force acting on an object is determined by the volume of the object submerged in a fluid and the density of the fluid. This force is equal to the weight of the fluid displaced by the object.
Does buoyant force increase with mass of an object?
No, buoyant force is determined by the volume of the displaced fluid, not the mass of the object. The weight of the fluid displaced by the object is equal to the buoyant force acting on the object.
What determines an objects buoyant force?
An object's buoyant force is determined by the volume of fluid it displaces and the density of the fluid. If the object's weight is less than the buoyant force acting on it, the object will float; if greater, it will sink. Archimedes' principle states that the buoyant force acting on an object is equal to the weight of the fluid displaced by the object.
What happens to the buoyant force as ans object sinks?
As an object sinks, the buoyant force acting on it decreases because the volume of water displaced by the object also decreases. This reduction in buoyant force allows the object to continue sinking until it reaches equilibrium with the gravitational force acting on it.
Which of the object has the greater buoyant force acting on it?
The object with greater volume displaces more fluid, resulting in a greater buoyant force acting on it. This is known as Archimedes' principle. Additionally, the density of the fluid and the object also play a role in determining the buoyant force.
What determine the buoyant force acting on an object?
The buoyant force acting on an object is determined by the volume of the object submerged in a fluid and the density of the fluid. This force is equal to the weight of the fluid displaced by the object.
How does Archimede's principle relate to the buoyant force acting on an object to the fluid displaced by the object?
It says that the buoyant force acting on the object is equalto the weight of the fluid displaced by the object.
Does buoyant force increase with mass of an object?
No, buoyant force is determined by the volume of the displaced fluid, not the mass of the object. The weight of the fluid displaced by the object is equal to the buoyant force acting on the object.
What determines an objects buoyant force?
An object's buoyant force is determined by the volume of fluid it displaces and the density of the fluid. If the object's weight is less than the buoyant force acting on it, the object will float; if greater, it will sink. Archimedes' principle states that the buoyant force acting on an object is equal to the weight of the fluid displaced by the object.
What happens to the buoyant force as ans object sinks?
As an object sinks, the buoyant force acting on it decreases because the volume of water displaced by the object also decreases. This reduction in buoyant force allows the object to continue sinking until it reaches equilibrium with the gravitational force acting on it.
Which of the object has the greater buoyant force acting on it?
The object with greater volume displaces more fluid, resulting in a greater buoyant force acting on it. This is known as Archimedes' principle. Additionally, the density of the fluid and the object also play a role in determining the buoyant force.
What are the two things necessary to know the buoyant force acting on an object?
To determine the buoyant force acting on an object, you need to know the density of the fluid in which the object is submerged and the volume of the displaced fluid.
How does Archimedes principle relate the buoyant force acting on an object and the volume of the fluid displaced by the object?
Archimedes' principle states that the buoyant force acting on an object in a fluid is equal to the weight of the fluid displaced by the object. This means that the volume of the fluid displaced by the object directly influences the buoyant force experienced by the object; the greater the volume of fluid displaced, the greater the buoyant force acting on the object.
Explain how the buoyant force acting on an object placed in water can be measured?
The buoyant force acting on an object placed in water can be measured by finding the difference between the weight of the object in air and the apparent weight of the object when submerged in water. This difference is equal to the buoyant force acting on the object, which is also equivalent to the weight of the water displaced by the object. By measuring these weights, one can determine the buoyant force acting on the object.
What is the relationship between buoyant force and the volume of water displaced?
The buoyant force acting on an object submerged in water is equal to the weight of the water displaced by the object. The volume of water displaced is directly proportional to the buoyant force, meaning that the greater the volume of water displaced, the greater the buoyant force acting on the object.
When an object float the buoyant force is?
When an object floats, the buoyant force acting on it is equal to the weight of the displaced fluid. This force opposes the weight of the object, allowing it to remain buoyant and stay afloat in the fluid.
What is the force acting on a floating object?
The force acting on a floating object is the buoyant force, which is equal to the weight of the fluid displaced by the object. This force pushes the object upward, counteracting the force of gravity pulling it downward. If the buoyant force is equal to or greater than the weight of the object, it will float.
