1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    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!

Roller Coaster Energy

  1. May 30, 2013 #1

    Hi, I am calculating energy (if there were to be no energy lost due to friction, etc) for this roller coaster.

    I understand that at point A there is only GPE and that at point E there is only KE.
    I was wondering if there would be both KE and GPE at point B and C.
    Would there be both KE and GPE at point D as well?

  2. jcsd
  3. May 30, 2013 #2

    Simon Bridge

    User Avatar
    Science Advisor
    Homework Helper

    The car has gravitational potential energy at all points - including at E.

    At E you are arguing that the GPE lost dropping from the height at A to the height at E as been turned into additional kinetic energy. So, you use the same argument for all the other points.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted