View source for Class 1 Lever

[[File:MechanismsClass1Lever.jpg|300px|right]]
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=====Description=====
This is the most common type of lever. With a '''Class 1 Lever''' the '''fulcrum''' is in the middle, like a see-saw. The '''effort''' is on one side and the '''load''' is on the other.


=====Features and Uses=====
Common examples of Class 1 Levers include: a [https://en.wikipedia.org/wiki/Crowbar_%28tool%29 crowbar], [[scissors]], [https://en.wikipedia.org/wiki/Pincers_%28tool%29 pincers], [[tinsnips]], many [https://en.wikipedia.org/wiki/Bicycle_brake push-bike brake levers and calipers] and [https://en.wikipedia.org/wiki/Weighing_scale#Balance balance type weighing scales].


=====Animations=====

* Examples from '''[[2100 Animated Mechanical Mechanisms|Nguyen Duc Thang's]]''' YouTube Channel '''[[2100 Animated Mechanical Mechanisms]]'''

{|
|-
| [https://youtu.be/TbdkXOo0z94 '''Parallel Jaw Pliers'''] - two back pins slide in the slots and to get parallel clamping surfaces of the jaws:
* For each jaw, distances to clamping surface from center line of the slot and from center of the hole are equal.
* Centre distances of the holes on the handle are equal. 
''(the red springs tend to move the jaws apart from each other)''.
| {{#ev:youtube|TbdkXOo0z94|200x200|right||frame|loop=1&autoplay=0&playlist=TbdkXOo0z94}}
|}

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[[Category:Primary]]
[[Category:Secondary]]
[[Category:Levers]]