# AT Cycle 34

## 4/8 - 4/12

M 4/8 ☀️🌒
Solar Eclipse

T 4/9

Th 4/11

F 4/12

### 🔴 2: T 4/9a, 🟡 4: M 4/8 ☀️🌒 , 🔵7: M 4/8 ☀️🌒  - oscillation problems

Today, we'll start by going over any assessments that we have not yet reviewed.  Don't forget to do your post-assessment metacognition in Google Classroom.

Then, we'll be reviewing many different aspects of oscillations including kinematic variables, forces, and energy in an oscillating system.  And we'll review the in-person lab that we didn't have time for.

Then, in groups, apply what you know and solve problems with simple harmonic motion.

Required:   Oscillation AP Problems (2009M2, 1990M3, 1999M2)

HomeworkOscillation problems due to ✏️ Google Classroom by Tuesday, April 9th at 10pm.  Also, watch the following two videos - they're the same problem with two different methods which are both useful:

To do before AP examWatch the following video on LC circuits (a topic that very occasionally shows up on the AP exam), and think about how this circuit relates to the oscillation we've studied in this unit:

Optional Extra Credit Pivot Lab:  If you want an additional experience, do this lab in ↩️ Pivot Interactives called "SHM vISLE: 5.5 Testing a mathematical model and assumptions" where we'll explore the mathematical model that we have derived for simple harmonic motion (SHM).  This lab will particularly focus on lab skills which will be tested on the AP exam such as taking data, finding trends by making a graph, linearizing your graphs, and focusing on the assumptions which lead to systematic error.  This lab is especially recommended for those students taking the AP exam.  ABSOLUTELY no late work will be accepted past Tuesday, April 16th at 10:00:00pm.  If the work is acceptable, this lab will count for a small extra lab grade in 4th marking period.

### 🟥 2: T 4/9b, 🟨 4: T 4/9, 🟦 7: T 4/9a - heavy rope problems

Today, we'll do some AP Problems that involve the concept of heavy ropes.

Required:  2009M3, 1975M3

Make sure all the AP problems in this unit up to this point are complete.

HomeworkHeavy Rope Problems due to ✏️ Google Classroom by Wednesday at 10pm. More Mechanics Unit Assessment on Tuesday, April 16th (4th marking period).  Watch the following video on universal gravitation.  If you remember how to use the formula for the force of gravity, skip the first 3:27, and focus on the calculation of gravitational field.  As you're watching this video, relate it to what you know about electric fields and Gauss's Law.

### ❤️ 2: Th 4/11, 💛 4: F 4/12a, 💙7: T 4/9b - gravitational field

Today, we'll start with a brief video about potential energy versus position graphs.  We'll use a physical analogy of a hill as a model of how to think about these types of problems.  This discussion will help you solve the last problem in the required set below.

Then, we'll take a look at some problems involving gravitational field:

Required:  2001M2, 1999M2, 1995M2 (only peripherally related, but good to know about potential energy)

Homework:   Gravitational Field problems due to ✏️ Google Classroom Friday, April 12th at 10pmMore Mechanics Unit Assessment on Tuesday, April 16th (4th marking period).  Watch the following video on Kepler's Laws:

### 📕 2: F 4/12, 📒 4: F 4/12b, 📘7: Th 4/11 - orbits

Today, start by finishing any problems from last time.

Then, you'll work on the following AP problems to check your understanding of Kepler's Laws.

Required:  1994M3, 2007M2

If you're wondering why 1994M3 part d has two correct answers that seem totally different, check out this article:

HomeworkOrbit Problems due to ✏️ Google Classroom Sunday, April 14th at 10pm.  More Mechanics Unit Assessment on Tuesday, April 16th (4th marking period).