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!

Very quick help please

  1. Dec 13, 2005 #1
    Hi I need help for this problem very quick,please!

    A particle moving along the x axis is acted upon by a single force F=F0*e-kx, where F0 and k are constants. The particle is released from rest at x=0.

    What is the maximun kinetic energy it can attain?


    The answer is F0/k but I dont know how to get it.
    Thanks
    B
     
  2. jcsd
  3. Dec 13, 2005 #2

    Galileo

    User Avatar
    Science Advisor
    Homework Helper

    Use conservation of energy.
     
  4. Dec 13, 2005 #3

    LeonhardEuler

    User Avatar
    Gold Member

    By the work-energy theorem the change in kinetic energy of a particle is equal to the net work done on it. Over an infinitisimal distance [itex]dW=\vec{F}\cdot d\vec{s}[/itex]. To get the total work, you have to integrate. The particle starts at rest at x=0 and we want to know the highest kinetic energy it could ever reach. You should be able to figure out what limits to integrate over.
     
  5. Dec 13, 2005 #4
    Thank you very much.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Very quick help please
  1. Quick PLEASE help (Replies: 1)

Loading...