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Well the basic answer is that when the balloon is 'floating' it is not heavy. The hot air inside the balloon is less dense and therefore lighter than the ambient air. The hotter it is, the lighter it is. When the weight loss of the air inside the balloon is equivalent to the weight of the balloon and equipment, passengers, etc., then it will float. The weight reduction of heated air is quite small which is why balloons have to be so big.

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Why does a hot air balloon float even though it is so heavy?

Relatively hot air balloon are pretty light, and they have a very large balloon which is filled with hot air, which naturally rises, and if you contain enough of it it is enough to lift the balloon.


Can a lead balloon float?

No... it wouldn't even survive the conditions of the upper atmosphere, unless it was a very tough balloon.. even if it could I'm assuming eventually the atmosphere would reduce to a point where it was as dense as helium or hydrogen (the gas I'm assuming would make your balloon float) and your balloon would stop anyway at a maximum altitude. Either way.. after that, the balloon would have to break away from Earth's gravity (not easy) and then somehow cover 382500km or so to get to the Moon itself..


What happens when you rub a balloon with wool and the other with silk?

Rubbing a balloon with wool will transfer electrons from the wool to the balloon, giving the balloon a negative charge. Rubbing a balloon with silk will transfer electrons from the balloon to the silk, giving the balloon a positive charge. These charges create static electricity and can cause the balloon to stick to other objects or even repel other charged objects.


Why does a balloon have mass?

A balloon has mass because it is made of matter, specifically latex or rubber. Even though a balloon filled with helium or air may feel light, it still has mass, which is the amount of matter it contains.


Why don't normal balloons stay in the sky?

Due to the weight of the balloon. A balloon is merely a capsule full of air so it will fall to the ground as the balloon weighs it down. A helium balloon will rise into the air because helium is less dense than normal air (i.e. it weighs less). The air inside the balloon is the same density as the air outside. The balloon material itself is heavier than air, which causes the balloon to sink. If you decrease the density of the trapped air, such as by heating it or replacing it with hydrogen or helium, the balloon may become even lighter than the balloon material and an equal volume of normal air, in which case the balloon will float or rise.

Related Questions

Why does a hot air balloon float even though it is so heavy?

Relatively hot air balloon are pretty light, and they have a very large balloon which is filled with hot air, which naturally rises, and if you contain enough of it it is enough to lift the balloon.


Can a lead balloon float?

No... it wouldn't even survive the conditions of the upper atmosphere, unless it was a very tough balloon.. even if it could I'm assuming eventually the atmosphere would reduce to a point where it was as dense as helium or hydrogen (the gas I'm assuming would make your balloon float) and your balloon would stop anyway at a maximum altitude. Either way.. after that, the balloon would have to break away from Earth's gravity (not easy) and then somehow cover 382500km or so to get to the Moon itself..


What is the weight of water displaced by a massless balloon?

No real object is massless. Even a balloon has the mass of the balloon plus the mass of the entrained gas.But if the buoyancy of the entrained gas (hydrogen, helium) allows the balloon to float away, then it will displace no water. Even so, it still has mass.


Is Jupiter really heavy?

Yes. Even though its a planet of condensed gas its heavy.


What happens when you rub a balloon with wool and the other with silk?

Rubbing a balloon with wool will transfer electrons from the wool to the balloon, giving the balloon a negative charge. Rubbing a balloon with silk will transfer electrons from the balloon to the silk, giving the balloon a positive charge. These charges create static electricity and can cause the balloon to stick to other objects or even repel other charged objects.


Why does a balloon have mass?

A balloon has mass because it is made of matter, specifically latex or rubber. Even though a balloon filled with helium or air may feel light, it still has mass, which is the amount of matter it contains.


Why do people float when swimming even though gravity is pulling them down?

b/c fat floats. it makes it harder to float if there no fat. And it requires skill


What enables a swimmer to float even though his body uncontrolled sink in water?

Motion, continous motionmakes it possible for the body to float. An example is the bicycle, when it stops its motion, it fall.


Why don't normal balloons stay in the sky?

Due to the weight of the balloon. A balloon is merely a capsule full of air so it will fall to the ground as the balloon weighs it down. A helium balloon will rise into the air because helium is less dense than normal air (i.e. it weighs less). The air inside the balloon is the same density as the air outside. The balloon material itself is heavier than air, which causes the balloon to sink. If you decrease the density of the trapped air, such as by heating it or replacing it with hydrogen or helium, the balloon may become even lighter than the balloon material and an equal volume of normal air, in which case the balloon will float or rise.


Is it the weight that makes things float?

No, it's the air volume on each item. For example, a balloon filled with air will surely float on the water, but a ballon filled with water will not float. That's because there is no air in the second one and that makes it even heavier.


If an object floats in oil then does it float in water?

Not necessarily. An object's ability to float in a liquid depends on the density of the object compared to the density of the liquid. Even though an object may float in oil, it may not float in water if the object is more dense than water.


Could you be pregnant even though you are bleeding heavy?

I'm pretty sure you can't if you have your period