Uniform spherical objects

[duki]

Homework Statement

On earth, two parts of a space probe weigh 11 000 N and 3400 N. These parts are separated by a center-to-center distance of 12 m and may be treated as uniform spherical objects. Find the magnitude of the gravitational force that each part exerts on the other out in space, far from any other objects.

Homework Equations

Fg = Gm1m2/r^2

The Attempt at a Solution

I have a homework sheet that the professor gives out to help us. In his answer he has m1 = 7.2kg and m2 = .38kg

How did he get this?
I get 1123.4 and 346.9

Also how did he find that r1 = .11m and 42 = .028m??

 

[duki]

nvm, he had the numbers mixed up. his #18 was labeled as 19 and vise versa..

sorry guys, you can delete this post

=D