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because gears, the round circles with the ridges, turn, acting like a wheel. The hands of
the clock are therefore the axles.

Wedge

A wedge is a simple machine made up of two inclined Fork
planes put together. These two planes meet and form a Axe
sharp edge. Wedges are used to push two objects apart or
cut an object into pieces. It can also hold objects in place.
A wedge gets in between objects and splits it apart. An
object like wood, can be split apart with a wedge. You
probably use a wedge every day. A fork is considered a
wedge. It is made up for four to five wedges put together.
It can be used to cut or split food apart.

What are Complex Machines?

A complex machine is a combination of two or more simple machines that work
together, such as when a lever and a wheel and axle are combined to form a cart. A
bicycle is also an example of a complex machine because it involves the use of two
wheels and axles. Here are some other examples of complex machines :

Clock Aeroplane

Sewing machine Washing machine Drill machine

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