The force that lifts a hot air balloon is called buoyancy.
Bouyancy, pressure, and gravity.
upthrust and gravity
the higher you go the lighter the air is.
Buoyancy, air resistance and gravity. Hope this helps!! :)
The force that lifts a hot air balloon is called buoyancy.
Bouyancy, pressure, and gravity.
upthrust and gravity
the higher you go the lighter the air is.
Buoyancy, air resistance and gravity. Hope this helps!! :)
hot air rising (less dense air), gravity. aero dynamics dont do much
The downward force of gravity, and the upward buoyant force resulting from the low density air inside the balloon.
A hot air balloon flies because it is filled with hot air. Hot air rises and causes the balloon to lift from the ground.
In rising, a hot air balloon works the same way as a helium balloon : the hot air inside is less dense than the surrounding air outside the balloon. The heavier outside air pushes below the balloon and forces it upward. To come down is easier in a hot air balloon. Unless it is continually reheated, its temperature reverts to that of the surrounding air and the balloon settles back to the Earth under its own weight. Vents that release the heated air (like venting helium in a helium balloon) is an alternative to increase the speed of descent.
Because the fire or heating device heats the air in the top section ( the actual balloon ) and hot air rises... so the hot air trapped in the balloon makes the balloon rise :)
to make a hot air balloon rise you use hot air
a hot air balloon virtually weighs negative lbs but it would depend on how hot the air is in the balloon.