Gravity is one of the four fundamental forces in the universe. Everything in the world is attracted with everything else by gravity. The force of attraction can be calculated using his formula:
(F= force(Newtons), G = gravitational constant = 6,67 * 10^-11, m = mass(kg), r = distance(m))
Physion is a physics simulator. In it you can set up different situations, and the program will show what happens, based on the laws of physics.
Here are two scenes which help show how gravity works. They use a gravity plugin for physion, found here.
How to use
1. Download Physion and run it.
2. Extact physion.zip
3. Open either scene by clicking File->Load scene.
4. Load the GravityMagnetFunction-1.0.script file by clicking File-> Evaluate Script.
5. Feel free to change each circle's x and Y coordinates, radius, and velocity by using the property editor to the right.
6. Hit play.
