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🟢 8: T 1/13 - ↩️Pivot pendulum energy lab (2)
🟢 8: T 1/13 - ↩️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!
Then, 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.
Presentation: Conservation of Energy Examples (we'll focus on slides 1-7)
Optional Extra Practice: Work & Energy Packet page 2-3 (Unit 6 CompuSheets Answers)
Homework: Homework: Pendulum energy lab is due in ↩️Pivot interactives tonight, Tuesday, January 13th Wednesday, January 14th at 10pm. Pendulum Lab assessment next class - Wednesday, January 14th on Thursday, January 15th.
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:
🟩 8: W 1/14 - conservation of energy, K & Ug
🟩 8: W 1/14 - conservation of energy, K & Ug
Today, two tasks:
Finish the Pendulum energy lab in ↩️Pivot interactives.
Work on work and energy (Wnc = 0) problems to prepare for your next quiz and unit test.
Homework: Pendulum energy lab is due in ↩️Pivot interactives tonight - Wednesday, January 14th at 10pm. Finish problem solving if you did not finish during class. Pendulum Lab assessment next class - Thursday, January 15th.
Optional Extra Practice: 📖 textbook problems from Ch 10 on Work & Basic Energy #1, 2, 4, 5, 11, 13, 14, 20, 21, 23.
💚❗8: Th 1/15 - work by non-conservative forces
💚❗8: Th 1/15 - work by non-conservative forces
Pendulum Lab assessment TODAY!
Today, we will look at some problems where we can use our knowledge of kinetic and gravitational potential energy to solve complex kinematics problems with friction. Conservation of energy is a useful tool and a alternative to using Newton's Laws and kinematics. Remember that work and energy are scalar quantities.
With time remaining, work on some more complex energy conservation problems (Wnc ≠ 0).
Presentation: Conservation of Energy Examples (we'll focus on slides 9-13)
Optional Extra Practice: 📖 textbook problems from chapter 10 on energy conservation #35, 37, 39, 42, 43, 47, 49, 79. Also, Work & Energy Packet page 4 #1-5 (Solutions to FYP: Energy).
Homework: Review your notes and write down any questions you have. Try some of the optional extra practice. Quiz on work and energy conservation problems (Wnc = 0 & Wnc ≠ 0) on Thursday, January 22nd.
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