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!

Homework Help: 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

    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

    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

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

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


    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper

    What are the units in that value?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook