Simple machines can be found in every room of your house.
The doorknob to a door is an example of wheel and axle. As you turn the knob, it rotates on an axle and unlatches the door.
Shoelaces are an examples of pulleys. As you pull on your shoelaces, they move through small holes, which reverse the direction of the force causing your shoe to tighten on your foot.
The handle on the toilet is an example of a lever. Whenever you push the lever, it flushes the toilet.
Fan blades are examples of inclined planes. As the blades spin around, they push air along their slanted surfaces.
A lightbulb is an example of a screw. You turn it clockwise to screw it in and counter-clockwise to unscrew it.
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