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Does the parachute exert a force upward?

  1. Aug 28, 2009 #1
    1. The problem statement, all variables and given/known data

    A model rock is shot into the air. Once it starts to fall a parachute is deployed. Draw a free body diagram of the rocket with the parachute deployed

    2. Relevant equations



    3. The attempt at a solution

    ok well there is gravity
    does the parachute exert a force upward? onto what? what do i call this force?
     
  2. jcsd
  3. Aug 28, 2009 #2
    Re: Forces

    it's not directly the parachute which causes the force upwards, all the parachute does is act as a huge sheet of strong paper above you, it's the air resistance which acts so much on the parachute (because it has a huge surface area- which is the determining factor for air resistance) which causes the upward force, you could also call it air drag.

    is that all you need to know?
     
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