Okeeeee ; soooo...
Simple machiness from left to rightt ;
Lever ; Pulley ; Wheel&Axle.
Lever is used to balance things.
Pulley is used to lift heavy things.
Wheel&Axle is used to turn things .
a Lever has 2 primary uses ;
lift foce and increase speed.
Machines cannot create energy
3 class or levers load;fulcrum;effert;
Wheel & Axle ;
wheel doesn't need to be roun just able to move in a circle.
pulley changes the direction of a force
A lever can be used as a teetor-totter. hehe(:
a Pulley can be a elevator.
Wheel & Axle can be a doorknob.
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