Gravity - What about me and the apple?
What about me and the apple?
What keeps your feet on the ground is Earth's gravitational force pulling you down. The amount of gravitational force Earth exerts on an object, in this case you, depends on your mass. Earth has a very large mass, so its gravitational force is very strong. That is why we are not falling into space. You exert an attracting gravitational force on Earth as well, but the pull is very weak.
If you are being pulled to the ground, it is easy to understand why Earth's gravitational force also pulled Newton's apple to the ground. Gravitational forces have a great effect on our lives. Conducting experiments makes us aware of their presence and influence, from keeping us from falling off the planet to allowing us to launch rockets.
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