Back and Forth

DoNow: Why doesn't the mass of the toilet paper affect the speed, or time of the fall? What do the R inner and R outer represent on the toilet paper roll? (notes)

AIM: I can describe the principal of time period and frequency and how they are related to the motion of a repeating phenomenon such as a circle, a pendulum, a spring or string vibrating. I can model an oscillating system with a trigonometric function.

Activities:
- Submit Around it Goes HW; Preview Notes Ch13-14; More Spun HW
- Tableshare Get In Harmony HW; ...think about Repeating Patterns?
- Whiteboard Review Toilet Paper Rolling Challenge Activity
- Rotation Demo (notes) (34MB video)
- "Simple" Harmonic Motion (notes)
- 2001 AP Physics Q1 A1
- Never Odd Or Even HW

Homework:
Complete Never Odd Or Even HW; Get In Harmony HW; Toilet Paper Challenge; ...think about Repeating Patterns?

Textbook Review: Ch 13.1-.2

Coming Up:
Orbits
Toilet Paper Rolling Challenge, Due: Block 02Mar16
Semester Photo Project, Photo 3, Due: Tue., 08Mar16
Wave-like Motion TEST, Soon...

Unravelling Tissues

DoNow: On the surface of the Earth, we use PE = mgh. Would this be an appropriate equation to describe the potential energy for a rocket or object in space relative to the surface of the Earth? Explain. (notes)

AIM: I can describe how something that repeats a motion pattern is related to circular motion.

Activities:
- Tableshare Around it Goes HW; Preview Notes Ch13-14; More Spun HW; ...think about Repeating Patterns?
- Intro to Harmonic Motion (notes)
- Toilet Paper Rolling Challenge Activity (notes)
- Get In Harmony HW

Homework:
Complete Get In Harmony HW; Toilet Paper Challenge; Around it Goes HW; Preview Notes Ch13-14; More Spun HW; ...think about Repeating Patterns?

Textbook Review: Ch 13 & 14

Coming Up:
Oscillations
Toilet Paper Rolling Challenge, Due: Block 02Mar16
Semester Photo Project, Photo 3, Due: Tue., 08Mar16
Wave-like Motion TEST, Soon...

The BIG Angular Systems TEST

DoNow: How many rotations and radians are in 57.3 degrees? How is rotational motion different from linear motion? (notes)

AIM: I will show that I know rotational forces, momentum and Universal Gravitation

Activities:
- Submit Flying Pig Investigation CER's
- Submit That Could Atwood HW; ...think about Rotational Force?
- Tableshare Around it Goes HW

- Test Taking Formation

Top Performers and Class Averages

Period	Class Average	Top Performer
1st	57.1 %	Sam & Wilson
3rd	57.1 %	Francis

*perfect score*

- Toilet Paper Rolling Challenge Activity
- Preview Notes: Ch 13 & 14: Oscillations & Waves
- More Spun HW
- What do you think about Repeating Patterns?

Homework:
Complete  More Spun HW; Around it Goes HW; Preview Notes: Ch 13 & 14; ...think about Repeating Patterns?

Coming Up:
Simple? Harmonic Motion
Semester Photo Project, Photo 3, Due: Tue., 08Mar16
Wave and Wavelike TEST

Rotation Review

DoNow: An pendulum bob rotates on a 2.0 m long conical pendulum that forms a 60 degree angle from the axis of rotation. Determine the period of the pendulum orbit. (notes)

AIM: I can describe the effect of a massive pulley on the acceleration of a system and identify differences with a similar system using an ideal pulley.

Activities:
- Submit Semester Photo Project, Photo 2
- Submit Orb-out of Control HW
- Color Review Final Flying Pig Investigation CER
- Tableshare That Could Atwood HW; ...think about Rotational Force?
- Review ...think about Rotational Force?
- Non-Massive vs. Massive Pulley WB
- TP Drop Experience Intro
- Around it Goes HW

Textbook Review: Ch11- Ch12.3

Homework:
Complete Around it Goes HW; That Could Atwood HW; Flying Pig Investigation CER; ...think about Rotational Force?

Coming Up:
The BIG Torque & Period Test
Flying Pig Investigation CER's Due: Block Day, 24Feb16
Semester Photo Project, Photo 3, Due: Tue., 08Mar16
Torque & Period TEST, Block Day, 24Feb16

Too Mas Tough

DoNow: The average radius of the Earth is 6371 km. Determine the approximate mass of the Earth. Can you determine the mass of the moon which orbits ~385000 km from the Earth's center? Explain. (notes)

AIM: I can describe the motion of a conical pendulum using Newton's Laws and circular motion relationships and how they are related to the tension of the string in the pendulum.

Activities:
- Submit Team WS: Rotational Dynamics; Remember that Timeperiod HW
- Color Review Draft Flying Pig Investigation CER
- Tableshare Orb-out of Control HW; ...think about Rotational Force?

- 2002 AP Physics Q2 A2

- That Could Atwood HW

Textbook Review: Ch 12.3

Homework:
Complete That Could Atwood HW; Orb-out of Control HW; Flying Pig Investigation CER; ...think about Rotational Force?

Coming Up:
Rotation Review
Final Flying Pig Investigation CER, Due: Tue., 23Feb16
Semester Photo Project, Photo 2, Due: Tue., 23Feb16
Torque TEST, Block Day, 24Feb16

Head Spinning

DoNow: What are the equations used for Universal Gravitation? (notes)

AIM: I can describe how to solve problems involving rotation forces including the motion of a conical pendulum using Newton's Laws and circular motion relationships that are related to the tension of the string in the pendulum.

Activities:
- Submit All Twisted Up HW
- Tableshare Team WS: Rotational Dynamics; Remember that Timeperiod HW; ...think about Rotational Force?
- Taking Turns Whiteboard
- Flying Pig Investigation CER
- Orb-out of Control HW

Textbook Review: Ch 12.3

Homework:
Complete Orb-out of Control HW; Flying Pig Investigation CER; Team WS: Rotational Dynamics; Remember that Timeperiod HW; ...think about Rotational Force?

Coming Up:
Too Mas Tough
Flying Pig Investigation Draft CER, Due: Mon., 22Feb16
Semester Photo Project, Photo 2, Due: Tue., 23Feb16
Torque TEST, Block Day, 24Feb16

Repeating Time Period

DoNow: Three 10040 kg point masses are separated by a distance of 0.082 m and form an equilateral triangle. Determine the magnitude and direction of the attractive force at each mass and the acceleration any mass would experience at the center of the arrangement. Explain. (notes)

AIM: I can describe the variables and relationships in Newton's Law of Universal Gravitation and how the attractive force is related to acceleration and centripetal acceleration.

Activities:
- Submit 'bout That Moment HW
- Tableshare All Twisted Up HW; ...think about Rotational Force?
- Color Review Rotating Mass Investigation Final Version CER
- 1992 AP Physics Q1 & A1
- Team Learning WS: Rotational Dynamics
- Remember that Timeperiod HW

Textbook Review: Ch 12.1-.2

Homework:
Complete Team WS: Rotational Dynamics; Remember that Timeperiod HW; All Twisted Up HW; ...think about Rotational Force?

Coming Up:
My Head Spins
Semester Photo Project, Photo 2, Due: Tue., 23Feb16
Torque TEST, Block Day, 24Feb16

Universal Gravitation

DoNow: A student rests on a rotatable stool. The stool-student system has a moment of inertia of 4.625 kg m^2. A 1.5 kg ball moving at 2.6 m/s is caught by the resting student at a distance 0.5 m away from the axis of rotation and tangent to the moment arm of the student.
(a) What happens to the student in the stool? Explain in terms of motion and momentum.
(b) Determine the initial angular momentum of the student-stool and ball.
(c) Determine the moment of inertia for the student-stool-ball.
(d) Determine the angular speed of the student-stool-ball system after the catch.
(e) Determine the torque on the student-stool if the collision lasted 2 ms.
(notes)

AIM: I can describe the angular momentum of rotation systems and the conservation of momentum in rotation systems using concepts of moment of inertia, angular velocity, torque and angular acceleration.

Activities:
- Submit 'bout That Radius HW
- Tableshare 'bout That Moment HW; ...think about Rotational Force?
- Color Review Rotating Mass Investigation Draft CER
- Universal Gravitation (notes)
- Universal Gravitation New Moon Whiteboard
- All Twisted Up HW

Textbook Review: Ch 12.1-.2

Homework:
Complete All Twisted Up HW, 'bout That Moment HW, Rotating Mass Investigation Final CER; ...think about Rotational Force?

Coming Up:
Period of Repetition
Semester Photo Project, Photo 2, Due: Tue., 23Feb16
Torque TEST, Dun-dun-DUUUN!

Repeating Momentum

DoNow: What are the equations used to define and predict angular momentum. Identify the variable and units of the variables. What do you predict the Law of Conservation of Angular Momentum to be?

AIM: I can describe the effect of changes in inertia on the change in momentum, angular velocity and linear velocity of system of objects.

Activities:
- Submit All About That Mass HW
- Submit Balance Design Experience & Prototype Presentations
- Tableshare 'bout That Radius HW; ...think about Rotational Force?
- Review Rotating Mass Investigation
- Rotation and Conservation Demo
- Rankings 89 & 90
- 'bout That Moment HW

Textbook Review: Ch 11.6-.7

Homework:
'bout That Moment HW; Rotating Mass Investigation Draft CER; 'bout That Radius HW; ...think about Rotational Force?

Coming Up:
Angular Energy
Semester Photo Project, Photo 2, Due: Tue., 23Feb16
Torque TEST, Dun-dun-DUUUN!

Rapidly Spinning

DoNow: A 1.0 m rod is resting horizontally with a pivot axis on one end. Gravity causes the rod to pivot. Determine the angular acceleration and then the linear acceleration at the end of the rod. (notes)

AIM: I can describe how ladder problems and see-saw problems are similar and different. I can identify the equation for angular momentum and conservation of angular momentum.

Activities:
- Submit Time to Torque HW
- Tableshare All About That Mass HW; Balance Design Experience; ...think about Rotational Force?
- Angular Momentum Definitions (notes)
- Ranking 96 & 95
- Rotating Mass Investigation
- 'bout That Radius HW

Textbook Review: Ch 11.6-.7

Homework:
Complete Rotating Mass Investigation Draft CER; 'bout That Radius HW; All About That Mass HW; Balance Design Experience; ...think about Rotational Force?

Coming Up:
Angular Energy
Balance Design Experience & BONUS, Due: Fri., 12Feb16
Semester Photo Project, Photo 2, Due: Tue., 23Feb16
Torque TEST, Dun-dun-DUUUN!

The Ladder

DoNow: Extend your arm and place an object on your hand. Relax your muscles to let your arm rotate naturally at your shoulder socket. If the object stays on your hand, what does this say about the object's linear acceleration and gravity? Does the object stay on your hand? Does the object stay if it is resting in the arm bend? Why? (notes)

AIM: I can describe how to solve rotational problems involving moment of inertia, torque and acceleration.

Activities:
- Submit Comes Around HW
- Color Review Draft The Big Lift CER
- Submit Draft and Final The Big Lift CER
- Tableshare Time to Torque HW; Balance Design Experience; ...think about Rotational Force?
- Ladder Problem WB
- All About That Mass HW

Textbook Review: Ch 11.4-.5

Homework:
All About That Mass HW, Time to Torque HW, Balance Design Experience; ...think about Rotational Force?

Coming Up:
Angular Momentum
Balance Design Experience & BONUS, Due: Friday, 12Feb16
Semester Photo Project, Photo 2, Due: Tue., 23Feb16
Torque TEST, Dun-dun-DUUUN!

Complicated Torque

DoNow: Two kids are using a 10.0 m long see-saw with a mass of 120 kg. One has a mass of 40.0 kg, while the other has a mass of 50.0 kg.
(a)  Calculate the Moment of Inertia of the system.
(b)  Determine the angular acceleration of the system.
(c)  How long does it take for the beam to rotate 0.17 radian
(d)  In this position, what is the angle between the moment arm and the force of gravity?
(notes)

AIM: I can describe how to determine torque, net torque and relationships to forces at a distance when angular acceleration is zero or the system is static.

Activities:

- Submit What Goes Around HW
- Tableshare & Review Comes Around HW; ...think about Rotational Force?
- Review Balance Design Experience & BONUS

- Well Balanced Meal WB
- Time to Torque HW

Textbook Review: Ch 11.4-.5

Homework:
Complete Time to Torque HW, Balance Design Experience, Comes Around HW; ...think about Rotational Force?

Coming Up:
Gong Hey Fot Choi! & More Torque
Semester Photo Project, Photo 2 Due: 23Feb16
Balance Design Experience & BONUS, Due: Friday, 12Feb16
Torque TEST, Dun-dun-DUUUN!

Rotational Force or Torque

DoNow: Two kids are using a 10.0 m long see-saw to learn some physics. One has a mass of 40.0 kg, while the other has a mass of 50.0 kg. What happens? Can the less massive kid ever come down? Can see-saw ever become balanced? (notes)

AIM: I can describe the effect of a force or multiple forces on the rotation of an object.

Activities:
- Submit Torque… Whaaat? HW; Preview Notes: Ch11-12
- Color Review Final The BIG Race CER
- Submit Draft and Final The BIG Race CER
- Color Review Draft The Big Lift CER
- Tableshare What Goes Around HW; ...think about Rotational Force?

- Balance Design Experience
- Comes Around HW

Textbook Review: Ch 11.1-.3

Homework:
Balance Design Experience, Comes Around HW, What Goes Around HW; ...think about Rotational Force?

Coming Up:
More Torque
Torque TEST, Dun-dun-DUUUN!
Semester Photo Project, Photo 2 Due: 23Feb16

Intro to Torque

DoNow: What makes good balance?

AIM: I can define torque and the direction of force that maximize the rotation around a pivot. I can describe analogs of twisting force and linear motion.

Activities:
- Submit Come Back Here HW; ...think about Rotational Motion?
- Color Review Final Balancing Act CER
- Submit Draft and Final Balancing Act CER
- Color Review Draft The BIG Race CER
- Peer Review Photo Project, Photo 1 Motion in 1D or 2D

- Tableshare Torque… Whaaat? HW; Preview Notes: Ch11-12; ...think about Rotational Force?
- The Big Lift CER
- Torque Equation (notes)
- The Physics Balance Infomercial
- What Goes Around HW

Textbook Review: Ch 11.1-.3

Homework:
Complete Draft The BIG Race CER; Final The BIG Race CER; What Goes Around HW, Torque… Whaaat? HW; Preview Notes: Ch11-12; ...think about Rotational Force?

Coming Up:
Rotational Force or Torque
Torque TEST, Dun-dun-DUUUN!
Semester Photo Project, Photo 2 Due: 23Feb16

The BIG Rotation TEST

DoNow: Why didn't mass matter in the BIG Rotation Race? Would radius matter? (notes)

AIM: I will show that I know rotational motion and inertia.

Activities:
- Tableshare Semester Photo Project, Photo 1

- Test Taking Formation

Top Performers and Class Averages

Period	Class Average	Top Performer
1st	57.4%	Donald
3rd	56.1%	Francis & Koan

*perfect score*

- Color Review Final Balancing Act CER & Draft The BIG Race CER
- Submit Draft and Final Balancing Act CER; Come Back Here HW; ...think about Rotational Motion?
- What do you think about Rotational Force?

- Torque… whaaaat? HW
- Chapter Preview Notes: Ch 11 & 12: Torque, Momentum & Orbits

Homework:
Complete Final The BIG Race CER; Chapter Preview Notes: Ch 11 & 12, Torque… whaaaat? HW; ...think about Rotational Force?

Coming Up:
Rotational Force or Torque
Semester Photo Project, Photo 1 Due: Tue., 02Feb16
Torque TEST, Dun-dun-DUUUN!