Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Potential energy basic question

  1. Apr 8, 2010 #1
    Hello everyone,

    If there is a box on top of a building, why does it have potential energy? What I mean is no one lifted it there(so this can't transfer into potential energy) and it was always there, where does the energy come from? Is keeping things againt gravity give you potential energy? Thank you :smile:
  2. jcsd
  3. Apr 8, 2010 #2


    Staff: Mentor

    Because it can fall and gain kinetic energy.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook