# On earth, two parts of a space probe weigh 12500 N and 8400 N. These parts are separated by a center-to-center distance of 23 m and are spherical. How do you find the magnitude of the gravitational force that each part exerts on the other out in space?

##### 1 Answer

And that's the same force they exert on each other on earth when set 23 meters apart.

#### Explanation:

Let's assume that

The gravitational force between two objects can be calculates as a function of the product of their masses (

The mass of the objects can be found by dividing their weight by the gravitational acceleration at the surface of the earth. I'm using

The distance was given:

We can look up a value for G:

And plug that all into the first equation:

That seems very small, but in space, that could eventually draw these two objects together.