AT Cycle 3
9/18 - 9/23
F 9/18
M 9/21
T 9/22
W 9/23
π΄ 1: F 9/18, π‘ 3: F 9/18a Newton's Second Law problems (part 2)
After a super brief daily check-in, we'll work independently and collaboratively on problems pertaining to Newton's Laws from Chapter 5 in our new Halliday textbook and Chapter 4 in our old Giancoli textbook (indicated with a G) starting at your level. I will assess your understanding individually and answer your questions as I circulate the room.
Support: 41, 48, 49, 51, 53, 56, 57
Required: 13, 56, 58, 64, G54, G55, G66, G75
Enrichment: 59, 67
Homework: Continue attempting and working through required problems. Commit to trying (or at least setting up) 2 problems. On a separate sheet of paper, write yourself a How-To Guide for Solving Newton's Law Problems. Include in that guide questions you would ask yourself while you are doing the problem.
If you have already tried Giancoli #54 and are stuck, check out my solution video below. (Please make sure you try this problem before you watch the video!) There are thinking steps missing in my video. Would you have known what to do? How did I know how to solve the problem this way? What strategies would you employ to get to this solution? These questions and possible strategies should be included in your How-To Guide.
If you can't work out the algebra on #55, don't worry about it. Below is the Solution to #55 so that you can get some assistance setting it up. (Click to enlarge) Try to figure out what generalizations you can make for yourself about how to tackle a hard problem like this. Make sure you are able to do all other required problems. Look through the problems, and make sure you understand them enough to present/make a video next class.
Giancoli Answers:
54. (m1 + m2 + m3)m2g / (m12 β m22)1/2
55. see picture above
66. a) (m2 - m1 sin ΞΈ) g / (m1 + m2)
b) a down (negative) requires m2 < m1 sin ΞΈ.
a up (positive) requires m2 > m1 sin ΞΈ
75. F = FT1 = FT2 = 1/2 Mg, FT3 = 3/2 Mg, FT4 = Mg
π₯ 1: M 9/21, π¨ 3: F 9/18b Newton's Second Law problems (part 2)
Continue working on problems from previous post.
Homework: Watch the two videos and answer the questions βοΈ in Google Classroom:
Nascar Experience Driver View - Do not watch this whole video - skip to anywhere in the middle and watch at least one minute. Pay attention to going around curves. Audio doesn't matter.
Bobsleigh Speed Record - Watch this entire video
β€οΈ 1: T 9/22a, π 3: T 9/22 circular & friction problems
Today, after the daily quiz, you'll finish working on basic Newton's Laws problems from the last post, and then you will be working on some additional problems on more advanced Newton's Laws concepts from Chapter 6 in Halliday and one problem from Giancoli Chapter 5:
Support: 17, 25, 27, 35, 45, 70
Required: 23, 34, 51, 57, 58, 60, 68, 98, G42
Enrichment: 21*, 22, 25, 59, 103
* Requires calculus, skip if you haven't taken it yet.
I'll assess your understanding through conversations with you.
Homework: Try setting up at least two additional problems from this set. If you have not done the banked turn homework, do that tonight.
π 1: T 9/22b, π 3: W 9/23 banked turns
Daily Check-in: circular motion
Today, we'll first finish at least the required problems on more advanced Newton's Law from Chapter 6 in Halliday and one problem from Giancoli Chapter 5:
Support: 17, 25, 27, 35, 45, 70
Required: 23, 34, 51, 57, 58, 60, 68, 98, G42
Enrichment: 21*, 22, 25, 59, 103
* Requires calculus, skip if you haven't taken it yet.
If you've already finished these required problems, you will be making a video of one of the harder problems from either Halliday Chapter 5 or Chapter 6 to help your classmates.
Then, with any time remaining, we'll try to figure out how fast we could go around the Bristol Motor Speedway in Nascar Problem. We'll work in groups to try to figure it out.
Homework: Finish either the Nascar Problem OR the required problems from Ch 5/6.
NASCAR problems banked tracks.doc