1. 05-1 Physics I Class 05 Uniform Circular Motion

2. 05-2 Newton’s Second Law - Review

3. 05-3 Important Facts About Velocity and Acceleration Vectors

4. 05-4 Circular Motion  When an object travels in a circle, its velocity is constantly changing (in direction at least).  That means the object has a non-zero acceleration even if it moves at constant speed.

5. 05-5 Uniform Circular Motion

6. 05-6 What is the Direction of Acceleration?

7. 05-7 Centripetal Force

8. 05-8 Example: A Rock on a String Twirl a 1 kg rock attached to a string in a 1 m radius vertical circle. The speed is 4 m/sec. What forces act on the rock and what are the directions of those forces?

9. 05-9 Using Newton’s Second Law to Solve Problems - Review

10. 05-10 Case A: Rock at the Top of the Circle

11. 05-11 Case B: Rock at the Bottom of the Circle

12. 05-12 Normal Force - A Concept We Will Use in Today’s Activity

13. 05-13 Discussion Swinging a Water Bucket Overhead

14. 05-14 Class #5 Take-Away Concepts

15. 05-15 Activity #5 Ferris Wheel Thrill Ride

16. 05-16 Class #5 Optional Material “Centrifugal” Force?

17. 05-17 Accelerated Frames of Reference

18. 05-18 The Inertial Forces