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Answer:
1. Why are simple machines important? Simple machines are useful because they reduce effort or extend the ability of people to perform tasks beyond their normal capabilities. Simple machines that are widely used include the wheel and axle, pulley, inclined plane, screw, wedge and lever.
2. Simple machines are any basic mechanical devices for applying force. The Inclined plane in the human body is the foot. A pulley In the human body when the tendon of a skeletal muscle slides over a round, bony surface, the "system" acts like a simple pulley.
Explanation: