3.20 Uniform Circular Motion Project

3.20 Uniform Circular Motion Project

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Storyboard Text

  • Once upon a time, there was a lady who contepmplated about launching a satellite all the way up into Earth's orbit.
  • She devoted most of her time reading books and learning about all of the different forces that affected objects in outer space.
  • I wonder what must I have to accomplish to keep my satellite in a uniform circular motion, the motion of an object in a circle at a constant speed, around earth?
  • She found out that the forces ruling the Earth, the moon and all the other planets, which are all natural satellites would also apply to her satellite!
  • In order for her satellite to properly orbit around the Earth, it would need to be travelling a horizontal distance of 8000 meters before falling a vertical distance of 5 meters. Because of the earth's curve, the satellite would remain the same distance above the earth.
  • The net force that keeps the satellite orbiting earth is caused by gravity, creating an inward or centripetal force. The orbit makes the satellite have a tangential velocity, meaning that the direction of the velocity vector at any instant is in the direction of a tangent line drawn to the circle (orbit) at the object's location.
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