Dot pattern for gravity
http://www.stmary.ws/HighSchool/Physics/home/animations3/gravityIntro5.htm
Dot pattern for gravity
http://www.stmary.ws/HighSchool/Physics/home/animations3/gravityIntro5.htm
Explore value of g on other planets
Find your weight
g on different planets
http://www.thephysicsaviary.com/Physics/Programs/Labs/AccelerationOnPlanetLab/index.html