Simple Machines

They are attached to the load or object that is moving.

• pulley

• axle

• wheel

A cylinder shape, not usually attached to the object, and usually under the object so that the load can roll across it.

• lever

• wheels

• rollers

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The pivot point in a lever.

• fulcrum

• load

• effort

The weight or object being lifted or lowered.

• lever

• weight

• load

Tags

NGSS.MS-PS2-2

The force being used to lift/lower the load.

• pulley

• effort

• load

This class of lever:

• -Fulcrum is in the middle

• -Example: A scale

• first

• second

• third

This class of lever:

-Load is in the middle

-Example: Wheel Barrel

• third

• first

• second

This class of lever:

-Effort is in the middle

-Fulcrum is to be held

• first

• second

• third

This type of pulley does not move.

• fixed

• movable

• block and tackle

This type of pulley, load moves with the pulley.

• moveable

• fixed

• block and tackle