Unit 2
Force and Translational Dynamics
(20-25% AP Exam Weighting)
2.1 Systems and Center of Mass
2.2 Forces and Free-Body Diagrams
2.3 Newton’s Third Law
2.4 Newton’s First Law
2.5 Newton’s Second Law
2.6 Gravitational Force
2.7 Kinetic and Static Friction
2.8 Spring Forces
2.9 Resistive Forces
2.10 Circular Motion
Our Schedule
Unit 2 Center of Mass HW (on AP Classroom) - skip #5
Page 336: 5, 7, 15a
Unit 2 Free Body Diagrams HW (on AP Classroom)
Page 129-130: 42, 43, 45, 47, 51
Read in book: pages 342 - 348
(From Sep 8) Unit 2 Newton’s Laws of Motion HW (due Monday, Sep 21)
Please work these problems and be ready to discuss by Monday, Sep 21.
Hints: #14 - ignore the words “center of mass” and just find the acceleration of the system.
#16 - ignore all other forces like gravity.
Page 360: 3-7 (due next class) **I deleted #1&2. The constants were too difficult to find…waste of time!
2.6GravForce MCQ HW (due next class)
2.6GravForce FRQ HW (due next class)
Don’t forget about Unit 2 Newton’s Laws of Motion HW (due Sep 21)
Sep 10
Sep 21
Sep 14
Sep 15
Sep 17
Sep 22
Go over Unit 2 Newton’s Laws of Motion HW
If time, start on Friction lab.
Unit 2 Quiz 1
The Unit 2 Newton’s Laws of Motion HW should be turned in before class. I forgot to assign this on AP Classroom. It is assigned now, but on paper….see homework!
Turn in FRQ homework and finished lab.
Start on homework.
NOTE: mass of earth = 5.97 × 10^24 kg
radius of earth = 6.37 × 10^6 m
mass of moon = 7.2 × 10^22 kg
radius of moon = 1.7 × 10^6 m
mass of sun = 1.989 × 10^30 kg
radius of sun = 6.96 × 10^8 m
Friction / Atwood machine lab
Coffee Filter Lab
Go over 2.8 & 2.9 Topic Questions
Score Unit 2 FRQ 3
Review UnivGravitation HW
Unit 2 FRQ 2 - work in groups
Date
Sep 3
Sep 8
Classwork
2.2 Notes - Forces and Free-Body Diagrams
(Book reference pages 111-125)
2.1 Notes - Systems and Center of Mass
(Book reference pages 302-304)
Newton’s Laws of Motion
Page 158: 3, 10, 11, 13, 27, 31
Unit 2 Newton’s Laws of Motion HW (on AP Classroom) - due Monday - I forgot to assign this. It has been reassigned on paper on Sep 14. Due Sep 22.
Hints: #14 - ignore the words “center of mass” and just find the acceleration of the system.
#16 - ignore all other forces like gravity.
Finish the Unit 2 Newton’s Laws of Motion HW and be ready for lab.
Read in book: pages 145-146 (drag) and 147-148 (terminal velocity). FYI - we do not study the concept of Reynolds number in APPCM.
2.7 Friction Topic Questions (AP Classroom)
Homework - all homework should be worked on paper and will be turned in on the due date.
Sep 24
Sep 28
I will be out.
FRQ of two masses with pulley: solution here
FRQ block on inclined surface: solution here
Today’s assignment (and homework if not completed):
Dynamics MCQ (only work circled problems)
Univ Grav MCQ (only work circled problems)
2.9 Resistive Forces Topic Questions (AP Classroom) SKIP 4, 5, 7
Test coming up Oct 8.
2.8 Spring Force Topic Questions (AP Classroom) due Monday
2.10 Circular Motion Topic Questions (AP Classroom) due Monday
Unit 2 FRQ 3 (submit on MySA for grading and bring to class on Monday)
Unit 2 MCQ Progress Check - this is your unit review. I will answer questions on Tuesday. Does not need to be submitted on MySA.
Final Unit 2 Review - go over MCQ Progress Check and other problems
Turn in all homework.
Go over 2.7 Friction Topic Questions
Start Circular Motion and Spring Force notes if time allows.
Springs in series and parallel
Uniform Circular Motion (UCM) practice problems
Sep 29
This will be turned in for a grade. Please use legible handwriting and proper notation.
I went home sick….please work on the MCQ Progress Check and FRQ 3.
Oct 1
Oct 5
Oct 6
TEST on Oct 15!