DAY 47

Goals: SWBAT...

1. Solve friction problems 

2. Find the coefficient of friction between objects in the classroom.

3. Analyze

WARM-UP:

Open CH5. --> LINK

1. Complete the following equation: FNET=

2. Draw a FBD showing all the forces on a ball as it rolls down a hill (see picture to right of projector screen)

3. For the same scenario as #2, draw a motion diagram, net force vector, and a vector showing acceleration.

CLASSWORK: (for each CW activity, think about which goal you are meeting. Also, which activity helps you achieve that goal?)

1. HW Review: --> Struggle Zone for any questions you have

2. RQ

3. Hands On Activity Completion: Finding Ff Static and Kinetic (30min)

    What's due? For each group:

    - One data table with columns for your data: tub number, μk or μs, Fa, Ff, Fg, and FN

    - One example of work that shows how you calculated Fa, Ff, Fg, FN, and μk or μs

    - Submit your work via Google Docs to j.alexander@tch.birminghamcharter.com

    Use the example on pg 128 if you get stuck. ***102g on the spring scale is equivalent to 1N of force***

4. Kahoot!

5. Notes: Motion along an inclined plane

    - How should you set up your x & y axes

    - revise if necessary

    - example problem

6. Practice Problems

Homework:

1. share your lab results with me by Monday 11:59pm

    (if you share it with me now, and give me editing rights, I'll give you feedback Fri/over the weekend)

2. Complete problems 33 & 34 from page 133

Goals: SWBAT...

1. Describe angular displacement.

2. Calculate angular velocity.

3. Calculate angular acceleration.

4. Solve problems involving rotational motion.

WARM-UP:

A. To better understand rotational motion, we will look back at translational motion. Make a chart, and for each of the following, write the term, symbol, unit, and equation related to the term. The first term has been done by me as an example.

          TERM                            SYMBOL                    UNIT                    EQUATION

1. Displacement;                         d                              m                            d=vt     

                                                                                        (commonly written at d=rt    "dirt")

2. Velocity;

3. Acceleration;

B. What are the three main units we use to measure an objects rotation?

CLASSWORK: (for each CW activity, think about which goal you are meeting. Also, tell me how the activity helps you achieve that goal)

1. Demo Lab: How do different objects rotate as they roll?

    Question: Do different objects of similar size and mass roll at the same rate on an incline? (Yes? No?)

    Prediction: Who will win? (Chart on sideboard)

2. What are radians, and how many are in a circle?

3. Definition of Terms:

    Lets make a chart just like in our warm-up. Read 198-199...

    Angular Displacement

    Angular Velocity

    Angular Acceleration

4. Relating Translational Motion to Rotational Motion

    Lets compare our translational and rotational charts

    Copy Table 8.1 from CH 8 pg 199. 

    What does your book call translational motion?

    Rotational motion?

5. Practice:

    Pg 200: 1-4

    Answers: 

6. CH 6 Exam return Thursday

            Tutoring available after school Mon, Tues, and Wed until 4:30 

HOMEWORK: 

Due Thurs ; pg 200 5-9 (10 is extra credit)