Phys 3: University Physics Daily Log

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Tuesday, Oct. 18:
Announcements:
    · Pass back quiz 4
    · Quiz Thursday on Ch. 5
    · HW Ch. 5: 13, 17, 19, 23, 27, 44
    · Ignore drag
Go over Ch. 5...equilbirium, dynamic problems, tension, friction, centripetal force
Work problem in class

Thursday, Oct. 6:
Announcements:
    · Return Force Table Labs
    · Quiz Tuesday (problems similar to HW)
    · HW Ch. 4: 4,5,7,9,15,17,19,24
Overview of Ch. 4 and discussion questions Q 4.1-4.4, and 4.7
Pulley Lab

Tuesday, Sept. 27:
Announcements:
    · Return Q3
    · Test Thursday
Review for test

Thursday, Sept. 22:
Announcements:
    · Fall Equinox
    · Take Q3
    · Tuesday Review for Test; Possibly start Ch. 4
    · Ch. 3 HW: 21, 23, 27, 29, 31, 53
Questions on Ch. 3
Quiz
Air Track lab:
    § Level air track
    § Inclined: v for different d
    § Inclined: measure g

Tuesday, Sept. 20:
Announcements:
    · Return Q2
    · Return L1
    · Q3 on Thursday
    · Ch. 3 HW: 1, 2, 3, 5, 8, 9, 11, 17
Review Vectors and Vector Multiplication
Discuss lab writeups again: 4 arguments to be made:
    § Accuracy: did instruments "agree" with each other?
    § Precision: how did uncertainties compare
    § Different Materials: how different did they need to be?
    § Known Materials: how close did they need to be?
Review Ch. 2
Ch. 3: Motion in 2 Dimensions
    § From: x,v,a To: vectors r, v, a
    § Vector v: tangent to path of particle
    § Vector a: two components:
      § parallel component: changes magnitude of v
      § perpendicular component: changes direction of v
    § Key: Treat different dimensions as separate 1D problems
Problem Solving Strategy (page 91)

Thursday, Sept. 15:
Announcements:
    · Take Q2
    · Ch. 2 HW: 23, 28, 34, 39, 42, 45
Review Vectors and Ch. 2
Force Table Lab

Tuesday, Sept. 13:
Announcements:
    · Return Q1
    · Quiz 2 Thursday (includes vector addition)
    · Ch. 2 HW: 1, 3, 5, 9, 10, 15, 21
Questions on vectors and homework
Chapter 2 Overview:
    § Describing motion
    § Will describe "why" later
    § Physics is powerful by expressing things math.
Chapter 2 Discussion
    § let a particle's position be x
    § average vs instantaneous velocity
    § x-t graphs
    § average vs instantaneous acceleration
    § constant acceleration
    § gravity
Chapter 2 Discussion Questions (Pg. 68)
Problem Solving Tips
Group Problems

Thursday, Sept. 8:
Announcements:
    · Take Q1
    · Do L1
    · Ch. 1 HW: 42, 43, 47, 48, 52, 65, 71
Finding Vector Components
Switching between Vector Representations
Adding Vectors, the Recipe
Multiplying Vectors: Dot and Cross Products
Lab:
    § Don't experimentally prove, but can disprove
    § Always record uncertainty
    § Lab writeups
    § Grading scale

Tuesday, Sept. 6:
Announcements:
    · First Quiz Thursday
    · Ch. 1 HW: 1.1, 1.5, 1.9, 1.15, 1.16, 1.17, 1.31, 1.35, 1.37, 1.41
Lessons from first chapter:
    § Physics is being able to solve problems
    § Units & unit analysis are important
    § Uncertainty & sig figures & accuracy/precision important for lab
    § Units/vectors tremendously important for rest of physics
Vectors:
    § Difference between vectors and scalars
    § Representations of vectors
    § Freedom to slide
    § Negative of
    § Parallel / Anti- parallel
Vector Addition:
    § Head-to-tail
    § Adding by components
    § Finding components (decompose)
Back up to class webpage.

Steve Liebling (home)