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How do you calculate a force of a object that is not accelerating

  1. Sep 6, 2010 #1
    I would like to know how to calculate the force of an object that is not accelerating, for example, If I were push on a wall, neither me or the wall would move because the net force would be zero, but how would I calculate the force if I am trying to put on the wall.(I do not want the net force)
     
  2. jcsd
  3. Sep 6, 2010 #2

    russ_watters

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    Staff: Mentor

    Welcome to PF.

    Sometimes that type of force can be calculated (like the force between a book and a table on which it is sitting) and sometimes it can't. The force you described can't be calculated, only measured.
     
  4. Sep 6, 2010 #3
    The force on a book on a table can be calculated because g (or G) was measured previously (historically).

    If you push the wall by simply leaning on it, you can imagine replacing yourself by a leaning post of equal weight and calculate the horizontal component caused by gravity (the part touching the floor is a pivot point).
     
  5. Sep 6, 2010 #4
    How can you measure it?
     
  6. Sep 6, 2010 #5

    russ_watters

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    Staff: Mentor

    Place a scale between your hands and the wall.
     
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