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Force and Energy(this is really confusing)

  1. Feb 19, 2012 #1
    So I learnt that if you sit on a chair, you are applying downwards force because of gravity, and the chair is applying an upwards force to stop you from falling down. However I thought that if you remove the chair, you would fall, but when you get off the chair, why doesn't the chair fly into the air since it has force? I am really confused, could anyone please help?
  2. jcsd
  3. Feb 19, 2012 #2


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    There is nothing pushing down on it anymore, so it doesn't apply an upwards force anymore either. To be clear, the chair itself was pushing you up, so even if it did provide a force still the chair wouldn't go flying off into the air. That would require something pushing the chair up.
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