simple machines is a tool that make lifting of objects. There are lots of examples like a steam roller,well and even a scooter or submerine.

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Simple machines are basic machines that make our work easier using push or pull such as lever, inclined plane, pulley.
A simple machine is a machine without moving parts.
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If I am understanding your question correctly, you are asking what are the types of simple machines. There are six types of simple machines these include; levers, pulleys, wheel and axle, inclined plane, wedge, and lastly, screws.

I hope this information helps you, J. Salsieder
A simple machine is defined as a mechanical object that changes the direction the force applied. Simple machines include levers, pulleys, the wheel and axle, inclined planes, screws, and wedges.
A simple machine is something that helps make our lives easier. These are the simple machines:

lever, inclined plane, pulley, wheel and axil, wedge. and screw

simple machinea machine that does work with only one movement; includes the inclined plane, wedge, screw, lever, wheel and axle, and pulley.

ma⋅chine 

 /məˈʃin/ Show Spelled Pronunciation [muh-sheen] Show IPA noun, verb, -chined, -chin⋅ing.-noun1.an apparatus consisting of interrelated parts with separate functions, used in the performance of some kind of work: a sewing machine.2.a mechanical apparatus or contrivance; mechanism.3.Mechanics.a.a device that transmits or modifies force or motion.b.Also called simple machine. any of six or more elementary mechanisms, as the lever, wheel and axle, pulley, screw, wedge, and inclined plane.c.Also called complex machine. a combination of simple machines.4.Older Use.a.an automobile or airplane.b.a typewriter.5.a bicycle or motorcycle.6.a vending machine: a cigarette machine.7.any complex agency or operating system: the machine of government.8.an organized group of persons that conducts or controls the activities of a political party or organization: He heads the Democratic machine in our city.9.a person or thing that acts in a mechanical or automatic manner: Routine work had turned her into a machine.10.any of various contrivances, esp. those formerly used in theater, for producing stage effects11.some agency, personage, incident or other feature introduced for effect into a literary composition.-verb (used with object)12.to make, prepare, or finish with a machine or with machine tools.
a simple machine is like a lever a pulley or a inclined plain
simple machines are machines that are easy to use and don't use any electricity
There are six types of simple machines:

lever

inclined plane

screw

wedge

wheel and axle

pulley
- Inclined Plane: Simple machine that is flat, sloped surface or ramp.

- Wedge: Simple machine consisting of an inclined plane that moves; can have one or two sloping slides.

- Screw: Simple machines that is an inclined plane wrapped around a cylinder or post.

- Lever: Simple machine consisting of a rigid rod or plank that pivots or rotates about a fixed point called the fulcrum.

- Fulcrum: The fixed point about which lever pivots.

- Wheel and Axle: Simple machine made from two circular objects of different diameters that are attached and rotate together.

- Pulley: Simple machine made from a grooved wheel with a rope or cable wrapped around the groove.

THIS IS THE RIGHT ANSWER IT WAS IN MY TEXTBOOK!
a lever, inclined plane, a pulley, wedges, screws, and a wheel and axle.

There are also gears but you would count them all the time. So dont.
levers-

~shovel

~seesaw

~baseball bat

~pulling end of a hamer

inclined planes-

~ramps

~steps

~ladders

wedges-

~scissor blades

~ax

~knife

pulley

~flagpole rope

~sail on a boat rope

~elevator

wheel and axle-

~wagon wheel

~bike wheel

~car wheel

~wheel barrel wheel
pulleys
lever, pulley, wedge, screw, inclined plane, wheel and axle
inclined plane: ramp

screw:screw

wheel n axel: steering wheel

wedge :something shaped n a hammer

pulley:crane

lever: can opener, wheel barrow, broom
The simple machines are inclined plane, levers, wedge, screw, wheel and axle, pulley.
A Knife- Y cut your food with it.

A broom- you sweep trash and dirt with it.

A pair of scissors- You cut paper with it.
Basketball Hoop

Bicycle Chain

Bottle Opener

Broom

Chair

Drill Bit

Pulley

Stapler

Screwdriver

Hand Drill

Hammer

Scissors

For the source and more detailed information concerning this subject, click on the related links section (Simple Machines) indicated below.
It is a gear.
A simple machine is a non-powered mechanical device that changes the direction or magnitude of a force. A simple machine uses a single applied force to do work against a single load force and can be a lever, wheel and axle, pulley, inclined plane, wedge, or screw.

1. The Pulley- Probably the earliest lifting pulleys used a rope over tree branch to lift heavy objects. Although pulleys were in use around the time the pyramids were built there is no record of them being used in their construction.

The first pulley systems built for lifting would have been made of tree trunks or branches with the rope over the horizontal part of the system. The use of wheels was the next step in the history of lifting pulleys

As people needed to transport goods over longer distances they discovered sails that used the power of the wind. To be able to use the wind power the sailors had to be able to raise and lower the sails. Pulleys were ideal for this task.

About 1100 AD the building of large churches called cathedrals became popular. These buildings were very large and some were around 150 meters high. Huge blocks of stone had to be lifted to build the walls and spires. The cathedral builders were the same people who designed and built the pulley systems to lift the blocks of stone.

2.The lever- Levers are one of the basic tools; they were probably used in prehistoric times. Levers were first described about 260 BC by the ancient Greek mathematician Archimedes (287-212 BC). Many of our basic tools use levers, including scissors, pliers, hammer claws, nutcrackers, and tongs.

3.The Wedge- History is not clear since it has been around for around 9,000 years. Almost all known ancient civilations had their version of the wedge.

4.The Wheel and Axle- The wheel is probably the single most important invention of all time. The oldest wheel was found in a place that is now called Mesopotamia. It is believed to be over fifty-five hundred years old. Before that time, people did not have wheels to move heavy objects. Axles were used to unite two or more wheels in order to achieve more work or transportation done.

5.The Inclined Plane- The inclined plane is one of the simple machines of antiquity, the physical operations of which were first theorized by Archimedes in the second century B.C., and then further explained by Hero of Alexandria in the first century A.D.

6.The Screw- Around the first century, screw shaped tools became common, however, historians do not know who invented the first. Early screws were made from wood and were used in wine presses, olive oil presses, and for pressing clothes. Metal screws and nuts used to fasten two objects together first appeared in the fifteenth century.

A wheelbarrow is made up of:

1) Two levers (The handles)

2) A wheel and axle

3) you may also roll it up An inclined plane

A wheelbarrow is an example of a class 2 lever and a wheel and axle.