PHYSICS: Happy Monday! Here’s the lecture on simple machines. We’ll add this little bit of chapter 7 to the chapter 5 test. Did you remember this stuff on simple machines from your physical science days?
I don’t think you’ll have any trouble with efficiency and mechanical advantage problems. How do you think the efficiencies of machines compare? Could you design a method to test that? You don’t need no stinkin’ lab sheets! Do you?
🙂
UPDATE: I scanned and linked a copy of the last Chapter 5 Review Worksheet for you here – it’s two pages. The questions and problems that are due tomorrow are circled. Chapter 5 Review Worksheet 2
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Where is the review worksheet that is tomorrow night’s homework?
Kelsey – Thanks!! I just put it on Monday’s post! 🙂
Calculating efficiency confuses me!
(energy output-energy input)/energy input. It’s just like the percent error formula, except with energy.
new axiom: One should not comment on topics that one has no knowledge of and is also confused by.
With the extra credit – do we still put a big X on them, or is that just chemistry?