Gravity. It all starts with an apple…. One beautiful spring day in 1655, a man named Isaac Newton was sitting under an apple tree in his garden, when one of the apples fell and crashed on his head. A story about an apple. That got Newton thinking… “Why did the apple fall towards the Earth?”
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The size of the gravitational force depends on two things:
The Law of Universal Gravitation
Basically, there are two major parts to this law that you need to know:
Mass vs. Weight