1. Limited time only! Sign up for a free 30min personal 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!

The Gravitational force 2

  1. Oct 5, 2009 #1
    1.Calculate the magnitude of the graviational force exerted on 442kg satellite that is a distance of 1.87 times earth radii from the center of the earth
    Mass=442kg

    For this I used the Newton's law of universal graviation formula: F=(g*m1*m2)/r^2
    ((6.67*10^-11)(442)(5.98*10^24))/(Radius of the earth(6.38*10^3) * 1.87=11930.6)^2
    =1238581865N

    a.) What is the magnitude of the gravitational force exerted on the earth by the satellite?
    I would think it's the same answer as number 1.

    b.) Determine the magnitude of the satellite's acceleration
    1238581865=Mass*acceleration
    123858186=442*a
    a=280222.1403

    c.)What is the magnitude of the earth's acceleration
    123858186=(5.98*10^24)*a
    a=2.0712 *10^-17

    but it's wrong what am I doing wrong?
    Thank you~!
     
  2. jcsd
  3. Oct 5, 2009 #2

    Redbelly98

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper

    What are the units in that value?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook