Examples Of Wedges Simple Machines

Posted on 16-08-2021 by admin

Examples Of Wedge Simple Machines Around The House
Examples Of Wedge Simple Machines And Names
Examples Of Wedges

A wedge is a device made up of two inclined planes. Wedges are used to lift objects, hold objects in place, and separate objects. A wedge splits or separates objects by dividing the input force applied on the wedge in half, so half of the output force goes to each side. Examples of a wedge simple machine A wedge is simply a triangular tool, often made of metal, wood, stone, or plastic. It is thick on one end and tapers to a thin or sharp edge on the other end. Technically it is an inclined plane (or two inclined planes put together to form a triangle) that moves. Perhaps the first example of a wedge is the hand axe (see also biface and Olorgesailie), which is made by chipping stone, generally flint, to form a bifacial edge, or wedge. A wedge is a simple machine that transforms lateral force and movement of the tool into a transverse splitting force and movement of the workpiece.

A simple machineis a basic mechanical device that helps you perform work. All six types of simple machines can most likely be found around your house. Explore simple machine examples to see which types of machines you use every day.

Simple machine wedge axe splitting wood

Inclined Plane Simple Machine Examples at Home

An inclined plane is fairly easy to spot because it is “a surface that is at an angle against a horizontal surface.”

ladder
sidewalk curb ramp
slanted roof
slide
stairs
wheelchair ramp

Pulley Simple Machine Examples at Home

While homepulley examples are hard to come by, you probably have at least one of these at home. A pulley is “a small fixed wheel or a group of such wheels with a rope or chain in a grooved rim that is used to lift something up.”

clothesline
curtains (with string to open and close)
dog run
extension ladder
flag pole
garage door
universal weight machine
well
window blinds

Screw Simple Machine Examples at Home

Aside from actual screws, there are many examples of screw machines in most homes. A screw is “any of various devices operating or threaded like a screw.”

bolt
car jack
drill
end of a hose
end of a light bulb
faucet
gas tank cap
jar lid
wine corkscrew

Wheel and Axle Simple Machine Examples at Home

You might be surprised how many everyday wheel and axle examples you can find in your house. As the name implies, a wheel and axle is “a larger wheel or pulley that is fixed to a shaft, a smaller wheel or pulley, or a drum, to increase mechanical advantage or speed.”

analog clock
bicycle gears
door hinge
doorknob
electric fan
office chair wheels
pizza cutter
pocket door
screwdriver
toilet paper roll on a spinning holder

Wedge Simple Machine Examples at Home

Wedges are one of the most common types of simple machines you can find around your house. A wedge is “a tool used to split something into pieces or the shape of anything that has two edges that meet at a point.”

ax (pictured at top)
cheese grater
chisel
door stopper
fork
knife
nail
needle
shim
shovel
snowplow attachment for tractor, truck, or ATV
staple
tack/pushpin
vegetable peeler
zipper

Lever Simple Machine Examples at Home

A lever is “a device consisting of a bar turning about a fixed point, the fulcrum, using power or force applied at a second point to lift or sustain a weight at a third point.” Explore a few lever examples you probably see on a daily basis.

balance scale
bottle opener
broom
claw end of a hammer
door
fishing rod
handheld garlic press
handheld juicer
handheld nutcracker
light switch
nail clippers
pliers
scissors
seesaw or teeter-totter
stapler
toilet seat
tongs
tweezers
water pipes (not all)
wheelbarrow

Simple Machines That Help You Every Day

Did you know there were so many simple machines making your life easier at home every day? Take a walk around your house and see what other great examples of simple machines you can find.

M.S. Counselor Education

Machines are all around us. A machine is something that makes it easier for us to do work such as moving heavy objects.

The following information about simple machines can be found below:

A printable PDF of the information on this page is available in the right-hand column.

Simple machines

Diagram 2 - example of a compound machine

There are generally two types of machines: simple and compound. Simple machines are ones which have only one part to do the work (e.g. the lever in Diagram 1) and compound machines are those that have two or more simple machines working together to do the work (e.g. the wheel barrow in Diagram 2).

Simple machines help us by giving us a ‘mechanical advantage’. This means that we can do things with less effort if we use a simple machine. Imagine that you need to move a large, heavy load (e.g. a rock). You could try and do this alone, but that would take a lot of strength and effort. However, if we use a simple machine we gain a mechanical advantage. In Diagram 1 you can see how a crowbar acts as a lever to help us move the large load (the rock).

Keep reading to find out about a number of different simple machines.

Inclined planes

Diagram 3 - example of an inclined plane

An inclined plane is a flat surface that is at an angle to the load. This type of ‘machine’ has no parts that move.

An example of an inclined plane is a ramp. In Diagram 3, the ramp makes it easier for the person in the wheelchair (the load) to move up into a building. The steeper the slope of the inclined plane, the more effort it takes to move the load up the slope. Along with ramps, stairs are also an example of an inclined place. You would agree that it is much easier to walk up a ramp or a staircase than a ladder. The inclined plane gives us a mechanical advantage.

Some other examples of inclined planes include:

roads leading up slopes
ramps in car parks
slides in playgrounds.

Levers

A lever is a rigid bar that rotates around a fixed point. This balancing point is called the fulcrum. A lever uses a force (or effort) to make a load move.

There are different types of levers, depending on where the load, the effort, and the fulcrum (balancing point) are positioned. For this reason, levers are classified into 3 separate groups: Class 1, Class 2, and Class 3.

Diagram 4 - example of a class 1 lever

Class 1 lever: This is where the fulcrum is between the load and the effort.

An example of a class 1 lever is using a screwdriver to open a can of paint (Diagram 4). Here the screwdriver is the lever and pushing down on it raises the load (the paint can lid). Imagine how much harder it would be if you had to lift the lid with just your fingers.

Other examples of Class 1 levers include:

bottle openers – to open a bottle of drink
claw hammers – to pull out nails.

Diagram 5 - example of a class 2 lever

Class 2 lever: This is where the fulcrum is at one end of the lever, the effort is at the other end, and the load is in between.

An example of a class 2 lever is a wheelbarrow (see Diagram 5). In this case the wheelbarrow and its handles are the lever, the load is the weight in the wheelbarrow, the fulcrum is the axle and the effort is the force applied by the person lifting the handles.

Other examples of Class 2 levers include:

staplers
nutcrackers that have the hinge at the end of the machine.

Diagram 6 - example of a class 3 lever

Class 3 lever: This is where the fulcrum is at one end of the lever, the load is at the other end, and the effort is in between. These levers involve using a large effort to move a small load a long distance.

An example of a class 3 lever is a person playing golf (see Diagram 6). In this case the lever is the golf club plus the person’s arms, the fulcrum is the golfer’s shoulder, the effort is the force being applied to the golf club by the golfer’s hands and the load is the weight of the golf ball.

Other examples of Class 3 levers include:

using a cricket bat, tennis racquet or a hockey stick to hit a ball
using a fishing rod to cast a fishing line.

Levers in balance

Examples Of Wedge Simple Machines Around The House

Diagram 7 - example of levers in balance

A see-saw is actually a lever with a fulcrum (balancing point) in the middle (see Diagram 7). Think about a see-saw with two people sitting at different distances from the fulcrum. If one person is twice as heavy as the other, the lighter person must sit further away from the fulcrum than the heavier person for the see-saw to be balanced. Once balanced, it requires very little force for each person to push the see-saw up and down with their legs.

Wheels and axles

Diagram 8 - example of wheels and axles

A wheel and axle is a simple machine that is made up of a smaller cylinder (the axle) joined to a larger cylinder (the wheel). Often a wheel and axle is used to make it much easier to move a load. An example of this is a trolley, or any other wheeled vehicle (see Diagram 8). You will agree that it is much easier to move a heavy load across the ground with a wheeled vehicle.

Pulleys

Examples Of Wedge Simple Machines And Names

A pulley consists of a rope (or a belt or chain) that passes around a wheel.

Fixed pulleys

Diagram 9 - example of a fixed pulley

An example of a fixed pulley would be the ones we see at the top of flagpoles (see Diagram 9). The pulley at the top allows the person standing on the ground to hoist the flag by pulling on the rope. This is much easier than having to climb the flagpole!

Other examples of fixed pulleys include:

the pulley at the top of a yacht mast which allows the sail to be raised up the mast by pulling down on the rope
the pulley at the end of the boom of a crane which works by pulling upwards to lift the load.

Moving pulleys

Diagram 10 - example of a moving pulley

Diagram 10 shows one moving pulley attached to the engine (the load), and one fixed pulley attached to the support above. This type of pulley system is called a ‘block and tackle’, where ‘block’ refers to the pulleys and ‘tackle’ is the chain that the person is pulling to lift the engine.

Wedges

Diagram 11 - example of a wedge

A wedge is a simple machine that looks like two inclined planes joined together.

A good example of a wedge is an axe, where the head of the axe is made up of two inclined planes which do the work. Think about an axe being used to chop and split a piece of firewood (see Diagram 11). The axe is actually being used to change the direction of the force. The force of the axe blow is downwards, but the wedge changes this downward force into two sideways forces, causing the wood to split apart.

Other examples of wedges include:

a knife blade
a chisel
the point at the end of a nail
a doorstop that is wedged under a door to prevent it from moving.

Screws

Diagram 12 - example of screws

A screw is an inclined plane that is coiled around a shaft (see Diagram 12). They usually have one flat end and one pointed end.

Examples of screws include:

wood screws
the screw in a car jack
the screw on the lid of a jar
the blades of a fan
the blades of an aeroplane propeller.

Gears

Diagram 13 - example of gears

Gears are toothed wheels that fit together so that when one gear turns it also turns the other gear. Sometimes the gears fit directly together, but other times they work together through a chain or a belt (see Diagram 13).

Some examples of the use of gears include: