What Are Examples of Simple Machines?

Common examples of simple machines include the hammer, crowbar, knife, log splitter, scissors, light switch, door knob, escalator, ladder, screwdriver, ramp, stairs, car jack, curtain cord and steering wheel. The six types of simple machines include the wheel and axle, inclined plane, simple lever, pulley, wedge and screw. The wheel and axle, simple lever and pulley constitute the lever family, while the inclined plane, wedge and screw are part of the inclined plane family.