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!

Circular orbit

  1. Feb 15, 2007 #1
    1. The problem statement, all variables and given/known data
    What is the acceleration due to gravity of the sun at the distance of the earth's orbit?

    2. Relevant equations
    Confused on which one to use

    3. The attempt at a solution
  2. jcsd
  3. Feb 15, 2007 #2


    User Avatar
    Homework Helper

    The sun attract a body according to Newton's universal gravitational law (falling apple), [tex]F_G[/tex]. The acceleration of a body due to this force will then be

    [tex]a = \frac{F_G}{m}[/tex]

    where m is the mass of the body. Will this acceleration be the same for all bodies at the same position w.r.t. the sun? Why?
  4. Feb 15, 2007 #3


    User Avatar
    Science Advisor
    Gold Member

    You can also use a=GM/r^2 where G is the Gravitational constant, M is the mass of the Sun (in kg if you use 6.67e-11 for G) and r is the Earth Sun distance in meters (again, if you use 6.67e-11 for G).
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Circular orbit
  1. Circular Orbit (Replies: 1)

  2. Circular Orbits (Replies: 0)

  3. Circular Orbits (Replies: 1)

  4. Circular Orbits (Replies: 15)

  5. Circular orbit (Replies: 1)