This week we will continue to model energy transfers through the idea of forces doing work.
Here is a reading on how to model energy transfer using a bar charts, and a practice worksheet with several scenarios for you to model the how the energy is transferred.
Ill provide an answer key later in the week
Check your answers to the Bar Charts worksheet. One solution has all problems with friction and one has all problems without friction. Since the worksheet asked you to determine with or without. I suggest you compare both to see how friction plays a role in the outcome of each problem.
Submit at least one question to me via email.
Watch the video of me answering your questions from the worksheet.
We are going to use the bar charts to help us set up equations..
Big Idea: Initial Energy + Work = Final Energy
Use your Bar chart to identify the types of Energy you have. Eg, Ek, Eel, -Workfriction.
Ex: A ball at the top of a hill moving at 4m/s goes down the hill and runs into a spring.
(Eg + Ek) -Wfriction = (Eel)
Then put in the equation for each one and solve for whatever you need to.
Eg = mgh
Ek =0.5mv^2
Eel = 0.5kx^2
Work = Force * displacement (remember only use the parallel components. And pay careful attention to the positive and negative signs.
Check your work with the solutions.
Email me at least one questions for the practice.
Watch the video of me answering your questions from “Energy Transfer with Numbers”. Video to come
Graded work for the week:
· Submitted at least one question during the week via email.
· Short WebAssign Quiz. “Remote Learning Week 1 Quiz”
The quiz is due by Sunday night at 11pm. It is a timed quiz. Once you open the assignment you will have 20 min to complete it.