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• Bicycle: A bicycle is a complex
machine because it uses many simple

machines like wheels, gears, and
levers to help us ride fast and easily.

How Does a Complex Machine Work?

Working of a complex machine:

• Different Parts Work Together: Each simple machine in a complex

machine does a small job, and when they work together, they help the
whole machine do something bigger.

• Making Big Tasks Easier: A complex machine makes it easier to do

tough jobs, like moving heavy things or traveling far distances.

Real-World Examples of Complex Machines

Some of the real-world examples of complex machines are:

1. Car

• What it does: A car helps people
travel from one place to another

quickly.

• How it works: The car uses wheels,
engines, and gears to move. You turn

the steering wheel (a type of lever) to go in different directions.

• Why it is cool: It can take you on long trips or vacations.

2. Crane

• What it does: A crane helps in lifting heavy
objects, like big blocks or steel beams.

• How it works: The crane uses pulleys and

levers to lift and move things from one place
to another.

Understanding the Working of Robot 23