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Vacuum / Void

  1. Oct 21, 2015 #1
    First Question on this forum, here goes...

    IF you have a large syringe(no needle), and put your finger over the tip of the syringe, then pull back on the plunger, you will feel a resistance on the plunger due to the VIOD your are trying to create. In essence there is NOTHING in the void...
    SO, If you do the same thing, BUT are in outer space, would you feel the same resistance?
    While in outer space you left your finger OFF of the tip of the syringe and pulled back, would there be resistance, since essentially in either case there would be a VIOD in the syringe?
  2. jcsd
  3. Oct 21, 2015 #2
    Draw a free body diagram on the plunger for the two situations, and, for the earth bound syringe, don't forget to include the force of atmospheric pressure on the plunger.

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