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34.5- Isaac Newton and the Law of Gravity
What keeps the moon in it's orbit around Earth?
Maybe the same force that pulled the apple to the ground is tugging on the moon. I should call it gravity .
Well maybe all physical objects have a force of attraction between them. The strength of the force depends on the masses of the objects and the distance between them .
So the moon and the Earth tug at each other keeping it in it's orbit, but in contrast the apple just hits the ground because it has a small mass and is close to the ground. This is how gravity works.
My analysis was correct, and my laws provide a physical explanation for past discoveries. My book describes the law of gravity. My laws have changed how people look at the universe.
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