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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.
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∙ 12y ago
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How does a hot air balloon float even though it is so heavy?
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.
What happens when you rub a balloon with wool and the other with silk?
the balloon will most likely pop even though i have never done it.
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..
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.
What force makes a straw and clay ball float even though there is a force pulling them down?
upthrust
How does a hot air balloon float even though it is so heavy?
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.
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.
What happens when you rub a balloon with wool and the other with silk?
the balloon will most likely pop even though i have never done it.
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..
Is Jupiter really heavy?
Yes. Even though its a planet of condensed gas its heavy.
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.
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.
What force makes a straw and clay ball float even though there is a force pulling them down?
upthrust
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.
Could a balloon fly off into space?
No.Additional Information:The balloon would easily expand enough to explode long before it left Earth's atmosphere. Then gravity would cause all the debris to fall back to Earth.If the balloon was strong enough and did not explode, even then it would not float into space. Even a very light hydrogen filled balloon would become less and less buoyant as it rose into thinner and thinner air. (It's the old Archimedes Principle.)
Why are balloons in different shapes even though they are filled with same air?
Balloons can be shaped differently because of the way they are manufactured. The shape of a balloon is determined by the mold or template used during the manufacturing process. Even though they are filled with the same air, the shape of the balloon is determined by its design and not by the air inside.
