We're going to learn about the first of three levers:
the First Class Lever!
Let's look at this website to see some neat animations!
http://www.enchantedlearning.com/physics/machines/Levers.shtml
First Class Levers:
But in this picture, they use the word EFFORT instead of FORCE.
What things do we use that are
First Class Levers?
Possible Answers:
-see saw (teeter totter)
-balance scale
-railroad handcart
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