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T 11/26
W 11/27 (half day)
M 12/2
T 12/3
🟢 5: T 11/26 - friction on inclined plane
🟢 5: T 11/26 - friction on inclined plane
Today, we'll work on the third part of our inclined plane investigation where we look at what happens when there is friction on the inclined plane. Using the materials provided, you can either choose to calculate the coefficient of static friction of kinetic friction on a given incline.
Lab Handout: Inclined Plane & Friction Lab
Homework: None. 🦃🍗 Happy Thanksgiving! 🍗🦃
If you are still confused about how inclined planes work, you may watch my detailed problem-solving video. Quiz on inclined planes Monday, December 2nd!
OPTIONAL ENRICHMENT (for those thinking of taking AT Physics especially):
Try some even harder pulley problems. If you need some ideas on how to approach these problems, you can watch the video below, but don't forget to write a ΣF statement in the y-direction to get your normal force for the mass on the incline. Try these 📖textbook inclined plane pulley problems #MQ22, MC30, 63, 83.
🟩❗ 5: M 12/2 - 📖 inclined plane problems
🟩❗ 5: M 12/2 - 📖 inclined plane problems
Quiz on inclined planes TODAY!
Today, we'll apply what you've learned about inclined planes to 📖 textbook Ch 5 - inclined plane problems: 24, 25, 28*, 30*, 65, 77, (* need to look at coefficient of friction table) and optionally for a challenge #MQ22, MC30, 63, 83 which require you to put multiple ideas together. If you are having any trouble, re-watch my Inclined Plane video.
Homework: 📖 Finish any inclined plane problems that you did not finish in class. Unit Assessment on Dynamics in Two Dimensions on Friday, December 6th!
Optional Extra Practice: Do page 6 of the Newton's Second Law packet (skip 3c). You may check Solutions to Inclined Plane Problems, but try them on your own first! Also, try 📖textbook challenge problems #MQ22, MC30, 63, 83 which require you to put multiple ideas together.
💚 5: T 12/3 - friction & vector forces
💚 5: T 12/3 - friction & vector forces
Today, we'll look at one other kind of problem - we pull or push a block at an angle. We'll see that when we do this, the normal force is NOT equal to the force of gravity! We'll try to finish Friction & Vector Forces during class. Write one theoretical solution for #1-3 and another for #4-5. What I mean by theoretical solution is to find an expression for acceleration a in terms of given variables: mass m, force applied FA, coefficient of kinetic friction μk , and gravitation field constant g. Watch the video for assistance.
Homework: Finish Friction & Vector Forces (SOLUTIONS). Unit Assessment on Dynamics in Two Dimensions on Friday, December 6th!
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