Evan Raeder

LeversA lever is a handle or bar that is attached a

piece of machinery in order to operate the piece of machinery.

Learning About LeversBy about 17,ooo BC people used levers to

Throw spears farther and harder than before.The reason why people invented levers is to

make lifting things easer.

Learning About LeversEvery lever has tree parts a bar, fulcrum, and

a load.All levers must have a fulcrum.Animals figured out how to use levers to get

work done. One type of lever you need to pull. And

another type thers a force you need to push down to lift the load.

There are three different Kinds of levers.

Learning About Levers