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!

Gravitational Acceleration (Gauss law)

  1. Apr 22, 2012 #1
    1. The problem statement, all variables and given/known data

    2. Relevant equations

    Just to clarify the question, the value given for R2 is the overall radius of Earth, it isn't R1-R2. (At least, that's my interpretation given that the R2 value is approx. the Earth's radius)

    3. The attempt at a solution

    Don't really know how to go about it, the approach I've tried is to use the given densities and volumes (from the radii) to find the mass of the core and the mantle. Added the masses (it computes to half the Earth's mass ) and then used
    g = GM/(R^2).

    I'm getting g = 4.1 for part i)

    All help would be much appreciated!

    Thanks :)
    1. The problem statement, all variables and given/known data

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Apr 22, 2012 #2
    at least show me your problem
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Gravitational Acceleration Gauss Date
How do write the force diagram for the following situation? Friday at 8:28 PM
Gravitational acceleration Feb 11, 2018