Simple machines are basic tools that make work easier. They reduce the amount of energy needed for a task and multiply the force by cleverly applying the laws of physics. There are six types of simple machines: the lever, the pulley, the screw, the inclined plane, the wedge, and the wheel and axle.
What is the first class lever
The wheel and axle is an example of what simple machine?
Who is credited with the first recognition of simple machines?
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