Cuesta College :: Physics 205A :: Fall 2017
Calendar Policies Goals Grades
    *.html

Monday 
"'Cause when love is gone, there's always justice.
And when justice is gone, there's always force.
And when force is gone, there's always Mom.  Hi Mom!"
     --Laurie Anderson, "O Superman (For Massenet)," United States Live,
       Warner Bros. (1981), 05:05.

Quiz 2: 11:00-11:25 AM
     **NO  PHONES/LAPTOPS/TABLETS ALLOWED**
     **USE YOUR OWN GRAPHING/REGULAR CALCULATOR** 
     WRITE NAME AND P.I.N. ALONG EDGE OF QUIZ
     CIRCLE ALL ANSWERS DIRECTLY ON QUIZ
     FINISHED EARLY?  TURN IN QUIZ, BE CONSIDERATE AND QUIET
          (WELCOME TO WAIT OUTSIDE IF YOU WANT TO TALK)

Group quiz (3-4 students/group, write names on back of "scratcher") 
     0.3 points for each "first scratch" correct answer
     0.1 points for each "second scratch" correct answer 

Quiz 3 worksheet questions (*.pdf)

Chs. 4.2-4.4: Newton's First and Second Laws (*.blog)
     "Newton's law flowcharts" (*.pdf)
     Ex: net force on sliding suitcase, slowing down (*.blog)
     Ex: stacked coffee filters (*.blog)


Laboratory 
Tuesday 
Check Twitter announcements: #CuestaPhys205A
Review previous reading assignment responses (*.blog)

Read Physics, 10/e, Chs. 4.5-4.8, 4.10
Preview online presentation (*.blog)
    (Understand how Newton's third law relates how an interaction between two different objects can be interpreted two different ways, and even though Newton's third law is not concerned with net force or motion (like Newton's first law and second law), it has a lot of important implications later on, especially with regards to recognizing which object is exerting a force, and which object is having a force exerted on it.  More details on magnitudes and directions of the weight force (for objects at/near sea level), the normal force (for objects with surfaces in contact with each other), and the tension force (objects connected with strings/ropes/wires/cables).

Ch. 4 Focus on Concepts 1 (p. 111)
Ch. 4 Problem 3 (ignore vertical forces on the box)
Physics quiz question: net force on pushed-down book (*.blog)
Physics quiz question: net force on elevator (*.blog)

Due 12:00 AM before start of next lecture
     Reading assignment 8 (*.html)
     Homework report 8 (*.html)


Wednesday 
"Force is all-conquering, but its victories are short-lived."
     --Abraham Lincoln, as quoted by Julia B. Hoitt, Excellent Quotations for Home,
       and School, Lee & Shepard (1888), p. 97.

Quiz 3 worksheet questions (*.pdf)

Chs. 4.2-4.4: Newton's First and Second Laws (*.blog)
     Ex: net force on pushed-down book (*.blog)

Ch. 4.5: Newton's Third Law ("POF-OST-ITO") (*.blog)
Chs. 4.6-4.8, 4.10: Applying Newton's Laws 
     Ex: book on crate, on floor (*.blog)
     Ex: rope, pulley, suspended box (*.blog)


Thursday 
Check Twitter announcements: #CuestaPhys205A
Review previous reading assignment responses (*.blog)

Read Physics, 10/e, Chs. 4.3 (review), 4.9
     (Review how/when Newton's second law applies to cases with a non-zero net force, and thus changing (accelerating) motion.  Distinguish between two types of friction behaviors: the static friction force has direction and magnitude that can both vary depending on what is being done to a stationary object, while the kinetic friction force has a direction and magnitude that must always be constant no matter what is being done to a object that has any kind of motion.)

Physics midterm question: forces on pushed-down book (*.blog)
Physics quiz question: book stacked on crate forces (*.blog)
Physics quiz question: bus pushing car (*.blog)
Physics quiz question: truck pushing bale (*.blog)
Ch. 4 Check Your Understanding 2 (p. 83)
Ch. 4 Problem 38
     (answers for even problem in homework report link below)

Due 12:00 AM before start of next lecture
     Reading assignment 9 (*.html)
     Homework report 9 (*.html)