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In
class 3 levers, the fulcrum lies at one end, the load is at the other
end, and the effort is placed in the middle. This
kind of lever requires the use of more effort to move the load;
however, the result is that the load can be lifted a larger distance in
a shorter amount of time (Gega, 1990).
| Here are some examples of Class 3
Levers: |
 This kind of catapult is a class 3 lever. Can you label the force, load and fulcrum on a catapult? (Image from Microsoft Clip Organizer) |
 The human arm is a class 3 lever: the elbow is the fulcrum, the muscles in the forearm are the effort, and what is held in the hand is the load. |
 Tweezers are an example of two class 3 levers working together. |
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Class 2 Levers |
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