1. 04-1 Physics I Class 04 Newton’s Second Law for More Complex Cases

2. 04-2 Newton’s Second Law - A Review

3. 04-3 Using Newton’s Second Law to Solve Complex Problems

4. 04-4 Atwood’s Machine Measuring “g” We assume that the string and pulleys are massless and frictionless.

5. 04-5 Atwood’s Machine Measuring “g” - Part 2 We assume a constant friction force, F.

6. 04-6 Solution to Atwood’s Machine Part 2

7. 04-7 Inclined Plane

8. 04-8 Coordinate Systems and Free-Body Diagrams Use trigonometry to determine X & Y components of forces not aligned with coordinate system.

9. 04-9 Solving for Acceleration

10. 04-10 Class #4 Take-Away Concepts

11. 04-11 Class #4 Problem of the Day #1

12. 04-12 Class #4 Problem of the Day #2

13. 04-13 Activity #4 - Forces and Motion in Coupled Systems