Simple Machines

Simple Machine-
any of the basic mechanical devices for applying a force, such as an inclined plane, wedge, or lever.

Lever

Definition: A simple machine that increases or decreases the force to lift something. Usually a bar pivoted on a fixed point (fulcrum) to which force is applied to do work.

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Examples:

*Scissors

*Can Opener

*Fork

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Description: Levers are used to make work easier when lifting things. You can place a heavy object on one end of a type of bar, then push on the other end. By pushing on the other end with something a bit heavier or stronger then the object on the end opposite of it, the object on the opposite end should move upwards. This works just like a teeter-totter.

Inclined Plane

Definition: A simple machine that raises an object to greater height. Usually a straight slanted surface and no moving parts, such as a ramp, sloping road or stairs.

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Examples:

-Ramp

-Slide

-Stairs

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Description: A simple machine that raises an object to greater height. Usually a straight slanted surface and no moving parts, such as a ramp, sloping road or stairs.

Wheel & Axle

Definition: A simple machine that reduces the friction of moving by rolling. A wheel is a disk designed to turn around an axle passed through the center of the wheel. An axle is a supporting cylinder on which a wheel or a set of wheels revolves.

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Examples:

-Rolling Pin

-Bicycle Wheel

-Pencil Sharpener

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Description: The wheel and axle is basically used to move things. The wheel is the major part. It's the part that moves. The axle, though, is what really allows it to move because the wheel moves around the axle.