What is machine?
A machine is a physical system using power to apply forces and control movement to perform an action.
What is complex machine?
A complex machine is a machine that consists of more than one simple machine.
What is simple machine?
What is complex machine?
A complex machine is a machine that consists of more than one simple machine.
What is simple machine?
Simple machines are a type of machine which makes our work easier Simple machines need more force than complex machines. There are 6 types of simple machine. Which are: 1. Lever, 2. Wedge, 3. Inclined plane, 4. Wheel and axle, 5. Screw, 6. Pulley.
Examples:
Simple machines: 
Complex machines : 
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