Simple Machines

By: Jamie Ferguson

Lever

A lever is a simple machine consisting of a rigid bar pivoted on a fixed point and used to transmit force, as in raising or moving a weight at one end by pushing down on the other


Everyday Use

We use it everyday see how light or heavy something is than the other.


Examples

Incline Plane

An incline plane is a plane inclined at an angle to the horizontal.


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Wedge

A wedge is a piece of wood, metal, or some other material having one thick end and tapering to a thin edge, that is driven between two objects or parts of an object to secure or separate them.
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Wheel and Axle

An axle is a rod or spindle (either fixed or rotating) passing through the center of a wheel or group of wheels


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Pulley

A pully is a wheel with a grooved rim around which a cord passes. It acts to change the direction of a force applied to the cord and is chiefly used (typically in combination) to raise heavy weights.


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Screw

A screw is a short, slender, sharp-pointed metal pin with a raised helical thread running around it and a slotted head, used to join things together by being rotated so that it pierces wood or other material and is held tightly in place.


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Work and Simple Machines PPT Video