.
"Wisdom is not a product of schooling but of the life-long attempt to acquire it." — Albert Einstein
AP Physics C (2°) 2nd Quarter 2005-06
Most recent update December 14, 2005 3:55 PM
Schedule
- Tuesday, October 25th:
Conservation of Momentum
- Day 1
- Conservation of Momentum / Impulse defined
- Vector conservation
- Reading HW: Read Examples 7.1, 7.2, and 7.3; Table 7.1; Figures 7.3, 7.4 and the figure at the top of page 275
- HW: Chapter 7 DQ #s 3 & 4; MC #s 1, 2, 3, 4; Problem #s 39, 40, 41 HW Packet H
- Day 2
- HW Questions
- Elastic and inelastic 2-d Collisions
- Reading HW: Read Figure 7.8, 7.9, Example 7.8 , the apple photo and caption on p. 281, Figures 7.10, 7.11 , 7.12, and 7.13
- HW: Chapter 7 DQ #s 11, 17; MC #s 10, 15, 20; Problem #s 73, 74, 75 HW Packet H
- Day 3 (HW Packet H Due)
- Ballistic Pendulum demo and problem
- Reading HW: (NEW MATERIAL this term!) Read Chapter 8 introduction & sections 8.1 to 8.4 on angular motion ; be sure to include the material on rolling with and without friction at the end of 8.4 ... this is hard to grasp but extremely important!
- HW: Chapter 7 MC #s 12, 13, 14, 19; Problem #s 54, 62, 63 Note: I'm going to experiment with not collecting HW this quarter. If quiz/exam grades show a drop that I think is attributable to blowing off HW, I'll reinstate HW next quarter.
- Day 1
- Monday, October 31st:
Rotational Motion: Torque and Angular Acceleration
- Day 1
- Angular Big Three
- Reading HW: Read Chapter 8.5 on torque -- pay attention to the material on cross-products
- HW: Chapter 8 DQ # 7; Problem #s 1 (note sig digs), 6, 20, 30, 55 Note: I'm going to experiment with not collecting HW this quarter. If quiz/exam grades show a drop that I think is attributable to blowing off HW, I'll reinstate HW next quarter.
- Day 2
- NOTE: I will be out today (Tuesday, Day 2) due to the sophomore retreat. Your job today is to go to the library and work quietly on the homework. Use the time to prepare for the Quiz on Day 4.
- Reading HW: Read Chapter 8.7 on Extended Bodies, Stability, and the Center of Gravity
- HW: Chapter 8 DQ #s 9, 13 & 23; MC #s 1, 10; Problem #s 75, 84, 113
- Day 3
- HW Questions & Quiz review
- HW: Study for Quiz
- Day 4
Quiz on all material so far this quarter including the homework from this week. You might also see a repeat of one of the questions from the midterm exam.
Reading HW: Read Chapter 8.8 carefully; you may need to commit parts of Table 8.3 to memory; work example problems with a pencil
HW: NONE except for the Reading HW above -- this is my attempt to demonstrate my seriousness about the need to follow this new material in the reading. The course will move very quickly.
- Day 1
- Monday, November 7th: Moment of Inertia; Center of Gravity
- Day 1
- Lecture: Torque, Moment of Inertia, and Angular Acceleration
- Problem solving
- HW: Chapter 8, DQ 6, 17, 18; MC 12, 13; P 114 ; and read about Cow Tipping
- Day 2
- Problem solving : Rolling without Slipping: the bowling ball problem
- HW: Chapter 8, Problems 120, 139, 142
- Day 3
- Lecture: Rotation about three axes
- Parallel Axis Theorem (moment of intertia of anything shifts by Md^2 if you move it a distance d from the axis)
- Perpendicular Axis Theorem (for planar objects, the third component Iz = Ix + Iy)
- In-class activity: make moment of inertia flashcards
- HW: do the multiple choice questions in Practice Exam 1 (due Day 4!!!)
- Day 4
- Lecture: discrete center of gravity calculations
- Problem solving
- HW: Chapter 8, Problems 95, 96, 100, 109
- Day 1
- Monday, November 14th: Rotational Energy / Rotational Momentum
- Day 1
- Lecture: Rotational Kinetic Energy (K = 1/2 I omega^2 -- analogy to K = 1/2mv^2)
- Problem solving
- HW: Chapter 8, DQ 13, 15, 20, 23; Problems 100, 150
- Day 2
- Lecture: Conservation of Angular Momentum (torque = dL/dt -- analogy to force = dp/dt)
- Problem solving
- HW: Chapter 8, MC 18, 22 ; Problems 152, 153, 154, 155
- Day 3
- Practice Exam 2 in class and key
- HW: Chapter 8, Problems 159, 160, 169, 171
- Day 4
- Practice Exam 3 in class and key (thanks Max)
- HW: study for exam on Day 1 of next week (see keys above)
- Day 1
- Monday, November 21st: Review and Exam
- Day 1
- Exam on Rotational Motion
- HW: none / catchup on old HW for Q&A on Day 2
- Day 2
- HW Q&A (15 min)
- Special topics
- HW: Over the break, read Chapter 10.5, 10.6, and 10.7 (Simple Harmonic Motion review -- I am going to assume that you understand this material so we can move on ... so be sure to read and test yourself on your knowledge!)
- Thanksgiving!
- Day 1
- Week of Monday, November 28th: Math boot camp: Taylor series, differential equations, integrals and laboratory
- Day 1
- Math lecture: Taylor series
- Math lecture: simple integrals
- Problem solving
- HW: if you don't know integrals from your Calculus class, find a partner who does and ask him/her to explain what they are doing in class; if you do know integrals from your Calculus class, find a partner who does not, etc.
- HW: from each according to his ability, to each according to his need: collect food for tomorrow!
- Day 2
- Note: on the last exam, many of you were writing down incomplete sets of conservation laws. For the record, the following are conserved in elastic collisions:
- kinetic energy (including 1/2mv^2 and 1/2Iw^2 terms)
- linear momentum in the x-direction (p_x = mv_x)
- linear momentum in the y-direction (p_y = mv_y)
- angular momentum about some pivot point (L = Iw = rxp)
Thus there are 4 (count 'em) equations for #2 on the free response of last week's exam. You have to remember that momentum is a vector quantity, so the x- and y-components are separately conserved.
- Math lecture: solving simple differential equations
- Math lecture: simple integrals
- Problem solving: hand out packet of problems (note changes!)
- HW: work on packet from class -- you'll work on this the rest of the semester ; here's a link to a differential equations website
- Note: on the last exam, many of you were writing down incomplete sets of conservation laws. For the record, the following are conserved in elastic collisions:
- Day 3
- Lab on rotational motion: the yardstick guillotine problem
- HW: continue work on packet (only the problems I mentioned in class ... not the other ones)
- Day 4
- Lab on rotational motion: finding the moment of inertia of various objects
- HW: continue work on packet of problems -- note that I changed #4 because of an error on my part (thanks Max!)
- Day 1
- Week of Monday, December 5th: Math boot camp: Differential equations & laboratory
- Day 1
- Lecture: Simple Harmonic Motion (SHM) diff eq's: mass on spring, pendulum, physical pendula
- Lecture: linear, surface, and volume density and how to determine mass from it
- HW: continue work on packet of problems (see public folder for solution of air resistance problem)
- Day 2
- Here's the board photo from yesterday -- show it to your parents, let them know they're getting their money's worth =)
- Lecture: how to determine cm and moment of inertia from density equation and shape
- Problem solving
- HW: continue work on packet
- Day 3
- Lab on physical pendula and SHM (Day 1/2)
- HW: continue work on packet
- Day 4
- Lab on physical pendula and SHM (Day 2/2)
- HW: continue work on packet
- Day 1
- Week of Monday, December 12th :
- Day 1 (Activity Schedule)
- Review problem: Gravity Train and a table of useful latitudes and longitudes
- HW: Study for final; here are some nice practice mini-exams (with solutions) from Harvard
- Day 2 (Activity Schedule)
- Review work / practice test
- HW: Study for final; here are some more practice quiz problems (with solutions) from a fellow AP teacher
- Day 3 (Activity Schedule)
- Review work / practice test
- HW: Study for final; remember that I have the last four years of free response tests on my APC Prep Site (scroll down a bit) -- with solutions! Also: here's the SHM and Gravity quiz I never gave
- Here's the best thing I think I've ever seen
- Final Exam Friday, Dec 16th, 8:30 AM in Room 314
- Your final exam will include all material from the Mechanics section of the AP Exam:
- Kinematics (~20%) including vectors, vector algebra, components of vectors, coordinate systems, displacement, velocity, and acceleration; one and two-dimensions, including projectile motion
- Newton's Laws of Motion (~20%) including friction and centripetal force, static equilibrium (1st law), dynamics of a single particle (2nd law), and systems of two or more bodies (3rd law)
- Work; energy; power (~15%) include work and the work-energy theorem, conservative forces and potential energy, conservation of energy, power
- Systems of particles, linear momentum (~5%) including center of mass, impulse and momentum, conservation of linear momentum, and collisions
- Circular Motion and Rotation (~20%) including uniform circular motion, angular momentum and its conservation (for point particles and extended bodies, including rotational inertia), torque and rotational statics, rotational kinematics and dynamics
- Oscillations and gravitation (~20%) including simple harmonic motion (dynamics and energy relationships), mass on a spring, penulum and other oscillations, Newton's law of gravity, orbits of planets and satellits (circular and general)
- Day 1 (Activity Schedule)
Coming up: Electricity and Magnetism!!! Since we have more time in the 2nd semester, we'll stop and smell the roses a little bit more (that is, we'll occasionally do some non-AP topics like astrophysics, general relativity, etc., in a relaxed and more fun way) Thanks for allowing us to run so hard this semester! We finished a month ahead of last year. (Check out the archive!!)