Levers

What are levers?

• An inclined plane wrapped around a cylinder or cone

• A wheel that has a rope wrapped around it

• A simple machine with a board or bar that rests on a turning point called the fulcrum

• Consists of a rod attached to a wheel

The force used to move a lever is called

• Fulcrum

• Load

• Effort force

• Pulley

An object that a lever moves is called the ....

• Fulcrum

• Effort

• Screw

• Load

The closer the object is to the fulcrum, the _______ it is to move.

• Harder

• Easier

• Slower

• Faster

First class lever has ______ in the middle.

• Fulcrum

• Load

• Effort

Example of first class lever is _____

• Scissors

• Wheelbarrow

• Nut cracker

• Human arm

Second class lever has ______ in the middle.

• Fulcrum

• Load

• Effort

Example of second class lever is _____

• Scissors

• Wheelbarrow

• Pliers

• Human arm

Third class lever has ______ in the middle.

• Fulcrum

• Load

• Effort

Example of third class lever is _____

• Scissors

• Wheelbarrow

• Pliers

• Human arm