Jump to content
  • entries
  • comments
  • views

Physics of a hot air balloon



I think that everyone knows how a hot air balloon works in theory but what are the basic physics behind it?  The basic concept of it is that it blows hot air into the large balloon at the top to create buoyancy which eventually causes the balloon to lift.  The air inside of the balloon is ultimately less dense than the air outside and this difference in density is also what causes the balloon to lift.  The principle behind this lift is called Archimedes principle.  This states that the upward buoyant force exerted on a body is equal to the weight of the fluid that the body displaces and acts in the upward direction.  This is the same principle that describes how boats stay afloat in the water. 


Recommended Comments

There are no comments to display.

Add a comment...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...