Physics Quest: Circular Motion

 

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Introduction:

In this PhysicsQuest you will learn about what happens when something moves in a circle.

Instructions:

  • Answer all of the questions on a piece of paper using the links provided.  If a link isn’t working, then find another website that can answer the question.
  • All answers must be in your own words.  Do not just copy and paste to your paper!

Questions:

http://www.physicsclassroom.com/class/circles/Lesson-1/Speed-and-Velocity

  1. What does the phrase Uniform Circular Motion suggest? Give an example other than the car example used in the web site.
  2. Average speed is calculated by dividing distance by time. How is the speed of an object moving in uniform circular motion calculated?
  3. This semester we have used “t” to represent time in equations. What does “T” represent? Explain what T signifies.
  4. Do objects moving in uniform circular motion have constant speed? Constant velocity? Explain.
  5. Is an object moving in uniform circular motion accelerating? Explain.
  6. Objects moving in circles at a constant speed accelerate towards the ___________ of the circle.circle
  7. Draw the direction of the velocity vector when the object is located at point B on the circle.
  8. Draw the direction of the velocity vector when the object is located at point C on the circle.

Section 2: Acceleration

http://www.physicsclassroom.com/class/circles/Lesson-1/Acceleration

circle

  1. Draw the direction of the acceleration vector when the object is located at point C on the circle.
  2. Draw the direction of the acceleration vector when the object is located at point A on the circle.

Section 3: Centripetal Force

http://www.physicsclassroom.com/class/circles/Lesson-1/The-Centripetal-Force-Requirement

  1. What is centripetal force? What does the term centripetal mean?
  2. Why, when sitting as a passenger in a car that is making a circle (turn) to the left do you feel as if there is an outward acceleration or force when there really is an inward acceleration?

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