1. Not finding help here? Sign up for a free 30min 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!

Conservation of Energy equation help

  1. Nov 6, 2008 #1
    1. The problem statement, all variables and given/known data
    Okay, I have a total mass of 0.255 of a stone that strikes the ground. Assuming that the stone is initially at rest when it begins falling, how high must the stone be above the ground for the energy of the stone and ground to increase by 2450 J?


    2. Relevant equations
    Okay, so m = .255, g = 9.81 and internal energy = 2450, what I need to know is how to arrange them so that I can find an equation for height...



    3. The attempt at a solution

    Yeah, I really need to know...
     
  2. jcsd
  3. Nov 6, 2008 #2

    mgb_phys

    User Avatar
    Science Advisor
    Homework Helper

    To get you started, Kinetic energy = 1/2 m v2
     
  4. Nov 6, 2008 #3
    Yeah, I'm a total idiot. I know that has at least something to do with the equation, but I'm not completely sure. Anymore information you can give me?
     
  5. Nov 6, 2008 #4

    mgb_phys

    User Avatar
    Science Advisor
    Homework Helper

Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Conservation of Energy equation help
Loading...