# HP Cycle 20

## 1/8 - 1/11

M 1/8

T 1/9

W 1/10

Th 1/11

### 🟢 5: M 1/8 - ↩️Pivot pendulum energy lab (2)

Today, we'll continue working on our pendulum lab from last time.  Make sure to get all of your data today if you didn't get it last time!

HomeworkPendulum energy lab is due in ↩️Pivot interactives on Thursday, January 11th at 10pmPendulum Lab assessment Friday, January 12th.

### 🟩 5: T 1/9 - conservation of energy, K & Ug

Today, we'll discover the interesting thing about the conservation of energy by doing a few problems which will require you to remember everything you have learned so far this year.  We will learn that there are usually a few different ways of solving physics problems - with forces and kinematics or with work and energy.  We will discover when it is best to use either strategy.  We'll also learn how to use "before and after" diagrams.

PresentationConservation of Energy Examples  (we'll focus on slides 1-11)

Optional Extra Practice:  Work & Energy Packet  page 2-3 (Unit 6 CompuSheets Answers)

Homework:  Pendulum energy lab is due in ↩️Pivot interactives on Thursday, January 11th at 10pm.  Pendulum Lab assessment Friday, January 12th.  If you happen to miss class today or need to review, you can watch the following videos:

Deriving formula for kinetic energy:

Even though the following video is on ELECTRIC potential energy, the beginning introduces how to derive the formula for gravitational potential energy, so ONLY WATCH FROM TIME 0:46-6:08:

Simple video on energy conservation:

### 💚 5: Th 1/10 - 📖 Mastering Physics work & basic energy

Today, we'll work on 📖 Mastering Physics problems "Ch 10 - Work & Basic Energy" #1, 2, 4, 5, 11, 13, 14, 20, 21, 23.

Homework:  Finish 📖 Mastering Physics problems "Ch 10 - Work & Basic Energy" by Thursday, January 11th Friday, January 12th at 10pm.  Pendulum energy lab is due in ↩️Pivot interactives on Thursday, January 11th at 10pm.  Pendulum Lab assessment next class - Friday, January 12th.