1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Friction - exists in a vacuum?

  1. Jun 12, 2013 #1
    friction -- exists in a vacuum?

    Is it possible for friction to take place in a vaccum?
  2. jcsd
  3. Jun 12, 2013 #2


    User Avatar

    Staff: Mentor

    Sure. Kind of hard to walk on the moon without friction, eh? :smile:
  4. Jun 12, 2013 #3
    With vacuum you actually take away only few ways of friction the main being that of air and a object moving through it.

    They had a plan to build special vacuum tunnels with high speed trains in them, train has very little friction as it is rolling on metal wheels on metal track , and if you remove the air you can increase the speed significantly.
  5. Jun 12, 2013 #4


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Nuts and bolts still work on the outside of the space station.
  6. Jun 13, 2013 #5
    Under certain conditions cold welding and/galling can occur as what this paper has concluded from the THE GALILEO HIGH GAIN ANTENNA DEPLOYMENT ANOMALY.

    http://trs-new.jpl.nasa.gov/dspace/bitstream/2014/32404/1/94-0141.pdf [Broken]

    Last edited by a moderator: May 6, 2017
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook