Activity!

In order to properly calculate the gravitational force on an object, this equation takes into account the masses of both objects and how far apart the objects are from each other.

The variables are defined below:

• Fgrav is the force due to gravity
• G is the universal gravitation constant 6.673 x 10-11 Nm2/kg2[4]
• m1 is the mass of the first object
• m2 is the mass of the second object
• d is the distance between the centers of two objects

Sometimes you will see the letter r instead of the letter d. Both symbols represent the distance between the two objects.

Open up the Apple Script and you'll see these variables. Research the values, enter them into the empty slots and hit the play button.

Research

http://www.physicsclassroom.com/class/circles/Lesson-3/Newton-s-Law-of-Universal-Gravitation