|A wedge is
a simple machine shaped like an inclined plane. A wedge
is actually like a moving inclined plane. An easy way to
see how a wedge works is to think of it as an inclined
plane standing on its narrow end. A fairly weak force,
applied to the wide end of a wedge whose narrow end is
being pushed into something, will send a strong force
pushing out at the sides. An example would be to take 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. Yes, even play! A shovel is acting as a wedge while you're shoveling the sand or snow that you're playing in. I think you'll agree that 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.
Wedge - You can use a wedge to split a block of wood, by driving it into the wood with a hammer.