Working Principles of Simple Machines

 When you complete this lesson you will be able to describe several simple machines used to make work easier. These simple machines are the inclined plane, wedge, lever, screw, pulley, gears, and the wheel and axle.

• Describe how the inclined plane serves to make work easier

• Describe how a wedge serves to make work easier

• Describe how a lever serves to make work easier

• Describe how a screw serves to make work easier

• Describe how a pulley serves to make work easier

• Describe how a wheel and axle serves to make work easier

• Describe how gears serve to make work easier