content: (If there weren't a bar holding the rocks...) Gravity is the perfect amount of force to make everything perfectly still. It even adjusts for differences in elevation and latitude, perfectly negating any centrifugal forces that might arise from a giant spinning mass of earth and water. You can actually feel your g-forces change when you turn the corner on a sidewalk. Just kidding...gravity compensates for that too. Oh and it also pulls the atmosphere and whatever is inside (like helicopters and balloons) perfectly along with it. But don't try to do any experiments that prove mass causes gravity in any other direction than vertical...that's for the scientists and nasa to explain using SpaceTM.