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| The Nature of Forces Chapter 2 Notes Section 2-4 Continued... Page 6 |
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| - Your mass does not change - it is the same everywhere on Earth. - The force of gravity varies according to the distance from the center of the Earth. The higher the elevation, the farther you are from the center of the Earth. Formula: Weight + Mass x Acceleration due to gravity w = m x g the unit of weight is Newton (N) Newtons Law of Universal Gravitation All objects in the universe attract each other by the forces of gravity. - Newton wondered about the force that was making the apple fall to the Earth. Was it the same force that keeps the moon in its path around the Earth? - Newton calculated the acceleration of the apple and compared it with the acceleration of the moon. - Newton was able to derive a formula to calculate the force acting on both the apple and the moon. He then concluded that the force acting on the moon was the same force acting on the apple - gravity. The size of the force depends on two factors: 1. Mass of the object 2. Distance between the objects END OF CHAPTER 2 NOTES |
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