10 Facts about Levers

Friday, January 17, 2020




A lever is a simple machine, that is the basis of many tools in and around your house and work.
The way levers work is by a force is applied at a point, which moves a load at another point through a balance point called the fulcrum. It is the relative positions of these three points - the force, the load, and the fulcrum - that distinguishes the type or class of lever. There are three classes of lever 1st, 2nd, and 3rd class.
1. Archimedes had this insight about a lever, "Give me a lever long enough and a fulcrum on which to place it, and I shall move the world."
2. A wheelbarrow is a class 2 levers that allow you to carry heavy loads.
3. Scissors are actually a wedge combined with a 1st class lever.
4. Pliers allow you to multiply your gripping power by using a 1st class lever.
5. A see-saw is a regular fixture at playgrounds and uses the power of a 1st class lever.
6. Hockey players use the leverage of a third-class lever in order to shoot the puck at great speeds.
7. A golf club is a 3rd class lever.
8. A 1st class lever has the fulcrum is in the middle and the force is on one side and the load is on the opposite end. 
9. A 2nd class lever has the load between the force and the fulcrum. 
10. A 3rd class lever has the fulcrum on one end, the force in the middle, and the load on the end.

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