3.20 Universal Circular Motion

3.20 Universal Circular Motion

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  • Just let us grab our things first my dear.
  • Sure!
  • Hey mom and dad, can we go to the amusement park today?
  • The merry go round and the ferris wheel of course dad!
  • Sure dad! Why not, sounds interesting.
  • What are you most excited for my son?
  • You know there is a lot of forces and physics that go into those machines. That is why they are so fun. Would you like to know what makes them so fun?
  • Oh ok, i think i understand.
  • First off the ferris wheel is an example of uniform circular motion. This is because it is moving in a circular motion with a constant speed as the ride goes on. However, the button that starts and stops the ferris wheel is an example of centripetal acceleration. For the button accelerates the ferris wheel as the ferris wheel is undergoing uniform circular motion.
  • Well it too also has forces that apply to physics. See the merry go round spins on an axis and it spins and gets faster and faster from that axis. The merry go round is an example of centripetal force because the merry go round is a body moving in a circular path that contains a force acting directing toward the center around which that body is moving. The centripetal force acts from the outside of the merry go round toward the center of the axis as the merry go round moves on its circular path.
  • Right!
  • Now you love the merry go round too right?
  • Yes, for the top of this cup can be measured by finding its circumference. Circumference is a tool for measuring the distance around curved geometric objects. By using circumference we can find the length around the top of this cup. This is combining the use of math and science to understand todays world. Do you understand son?
  • I think I understand.
  • Woah, really?
  • Son, even this cup has science and physics behind it.
  • Well it is time to leave the amusement park, i hope that you not only had a lot of fun but that you also learned a lot about physics, forces, and the world around you.
  • I did dad, I really did. Thank you.
  • Good I'm glad, and you are welcome my son.
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