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 Wedge

A wedge is one of the six classical simple machines. It is a triangular shaped tool that looks like a small and portable inclined plane . It can be used to separate two objects or portions of an object, lift an object, or hold an object in place.

A wedge is actually like a moving inclined plane. A fairly weak force, applied to the wide or blunt end of a wedge whose narrow end is being pushed into something, will send a strong force pushing out at the sides.

The mechanical advantage of a wedge is given by the ratio of the length of its slope to its width at the wide end . A wedge with narrower angle has a higher mechanical advantage.
Use a wedge of steel and bang it into the end of a log, the log will split open. We can use the wedge action to cut and shape ice and wood sculptures, clay or whatever.

A wedge may seem like a simple tool. But the wedge is very important while doing work, crafts, or at play. It's a lot easier to move an object using a wedge than if it were moved by only your hands.

TRY THIS EXPERIMENT

To see how a wedge works, hold the point of a nail on top of a piece of thick cardboard. Press the nail down against the cardboard. The point enters the cardboard first and makes a path for the larger part of the nail to enter and separate the paper.

ON YOUR OWN

Make a list of different wedges you have around your home or in your classroom.


 

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