1. TODAY D AY 26 Today's Goal: 1) To know what is expected of pulleys, friction and the lab. 2) To figure out the coefficient of friction and how it is used. Homework: Given out today for next class. A lot done in class to make sure that we are capable. Importance: Reading situations and knowing what is asked and how to approach it.

3. Which of these is true for the amount of imbalance in the system? A) Its 20N, the weight of the hanging mass B) Its 80N, the weight of the mass on the table C) Its 100N, both weights added for the system weight D) Its 60N, the weights subtracted

4. Which of these is true for the amount of imbalance in the system? A) Its 20N, the weight of the hanging mass B) Its 80N, the weight of the mass on the table C) Its 100N, both weights added for the system weight D) Its 60N, the weights subtracted

5. Which of these is true for the amount of mass in the system? A) Its 20N, the weight of the hanging mass B) Its 80N, the weight of the mass on the table C) Its 100N, both weights added for the system weight D) It is none of these

6. Which of these is true for the amount of mass in the system? A) Its 20N, the weight of the hanging mass B) Its 80N, the weight of the mass on the table C) Its 100N, both weights added for the system weight D) It is none of these The system mass is the masses added, which is 10kg.

7. Determine the amount of acceleration and submit it

9. Which of these is true for the amount of imbalance in the system? (More than 1 can be right) A) We need to determine the mass in kilograms B) We need to multiply each by gravity to eventually get weight C) We need to add both weights together for imbalance

10. Which of these is true for the amount of imbalance in the system? (More than 1 can be right) A) We need to determine the mass in kilograms B) We need to multiply each by gravity to eventually get weight C) We need to add both weights together for imbalance We need to subract both weights together for imbalance

11. D ETERMINE THE A CCELERATION

12. T HE L AB : For next class: Submit on a separate paper. 2 parts, each with what is stated in the GOAL and ANALYSIS Take 10 minutes

13. F ROM THE V IDEO

14. FRICTION Direction: Equation:Units: Coefficient of Friction:

15. For the following picture, 2 people are pulling Kim Kardashian (83 kg I believe). If the coefficient of friction is.4, what is the acceleration of Kim? First, lets determine the amount of friction.

16. For the following picture, 2 people are pulling Kim Kardashian (83 kg I believe). If the coefficient of friction is.4, what is the acceleration of Kim? Now determine the imbalance, then acceleration

17. N OW LETS TRY