The zipper is a wedge... your welcome everyone who needed it(:
it is a wheel and axel
sources:the embassy of Vietnam and pulley.net/you are stupis/yolo.
Wedge
Wedge
A broom is a wedge
The original six are the lever, wheel and axle, inclined plane, wedge, screw, and pulley.
The Pulley is one of them. Wheel and axle. lever. screw. wedge. inclined plane.
A zipper is not considered a pulley. It is considered a wedge because it has to wedge two things together, as wedge itself in to pry them apart.
wedge lever
wedge is another simple machine kind of lever
pulley,lever,screw,inclined plane,wedge,wheel and axle.
Inclined plane
wedge lever
A stapler is a compound machine. It is made up of a lever and a wedge.