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wheels and axles and inclined planes
website: www.knexeducation.co.uk
A Quick Guide to Inclined Planes
A�Quick�Guide��
to�Inclined�Planes
We know from our experience of walking up
hills that it needs less effort to walk up a gentle
slope than a steep one. In the end, however,
both routes will take us to the top and we will
have climbed the same vertical distance. The
difference lies in the fact that one route will
cover a longer distance than the other, but it
will appear to be easier to accomplish.
Ramps and gentle slopes are examples of
a simple machine called an inclined plane.
A simple machine is a tool that makes it
easier to do things. Using a simple machine
does not change the task to be done; it simply
makes the job easier by changing the way it
can be done. As we noted earlier, to reach
the top of a hill you can take a short, direct
route up a steep slope that requires a lot of
effort on your part, or you can stroll up a much
longer, but gentler route. The second option is
the basis of the inclined plane.
Using ramps to move and raise heavy
objects is not new. The ancient Egyptians
probably used ramps to build their temples
and pyramids.
The same principle is used in a number of
different contexts. Ramps, for example, can
be used to load heavy objects into lorries or
to allow wheel chairs to avoid stairs.
Rather than try to lift the load vertically
onto the back of the lorry, it is much easier
to move it up a ramp.
Education
®
26


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