Wheel and Axle, Consists of a rod through the center and a wheel, Reduces friction, Usually has a turning motion, Example: door knob, Screw, A wire wrapped around an incline plane, Hold things together or lift an object, Wedge, Used to cut or separate, Scissors are two types of this simple machine joined together.., Pulley, Wheel and rope, Changes the direction of a force, Examples: elevator, flagpole, Used to raise or lower a load, Lever, Contains a bar and a fulcrum, Placing the fulcrum near the load increases mechanical advantage, Ex. See saw, Inclined Plane, Ramp, Connects a lower lever to a higher level

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