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!

Sidereal frame and conservative force.

  1. Aug 12, 2009 #1
    Briefly describe a sidereal frame of reference, and then state Newton's laws of motion

    I can't find sidereal in the index of my textbook, but my googling leads me to conclude that it's something to do with fixed stars. I'm not sure if a sidereal frame is also an inertial frame. Newtons laws are easy enough, but I get the feeling I'm not being asked for the classical formulations, but rather to append 'with reference to an inertial frame' or the like to the end.

    State the properties satisfied by a conservative field of force, and then derive the energy equation for a particle of constant mass m moving under the influence of such a force

    Umm, help?
     
  2. jcsd
  3. Aug 14, 2009 #2

    tiny-tim

    User Avatar
    Science Advisor
    Homework Helper

    Hi Gwilim! :smile:

    "sidereal" simply means fixed relative to the stars …

    it's more inertial than a laboratory frame!

    (because it doesn't pretend that the Earth isn't spinning. :biggrin:)
    Go on, start … what are the properties satisfied by a conservative field of force? :wink:
     
  4. Aug 14, 2009 #3
    So what would be acceptable wording in an exam?

    "A sidereal frame of reference is one which uses fixed stars as a frame of reference"?

    Seems a bit, uhh, self referential?

    I don't know :( I hear it's something about 0 curl but I don't think I'm expected to know what curl is so that can't be the answer they're looking for. Can't you just tell me?:uhh:
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Sidereal frame and conservative force.
  1. Conservative force (Replies: 1)

Loading...