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B3-02: LEVERS - THREE CLASSES 9 years 8 months ago #255

  • mike1
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ID Code: B3-02
Purpose: Demonstrate the three classes of levers
Description:
Referring to the three photographs above:
First class lever (top): the pivot is between the load and the applied force (push down with hand or pull down with spring scale at left in photo).
Second class lever (lower left): the load is between the pivot and the applied force.
Third class lever (lower right): the applied force is between the load and the pivot.
Note: Look this over before class; you must change around the various components during the lecture.
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