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!

Force please help

  1. Mar 11, 2006 #1
    What is the relationship between force and energy?
  2. jcsd
  3. Mar 11, 2006 #2


    User Avatar

    Staff: Mentor

    energy equals force times distance
  4. Mar 11, 2006 #3
    thanks for the help
  5. Mar 11, 2006 #4
    one other thing...

    i know that energy is conserved (the total amount in a closed system is constant), but why is it incorrect to say that force is conserved?
  6. Mar 11, 2006 #5
    Usually when we say that something is conserved we mean that it is constant with respect to time. The total energy of a closed system is conserved because that level of energy never changes. There are certainly situations where force might be conserved (such as the weight of a book sitting on a table), but the types of cases where this would occur would be far too restrictive to put into a general theorem.

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook