What is a machine

Work

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A machine can be composed of one or several moving parts.

To begin, machines help us do work. According to science, the word “work”, means using force - pushing or pulling- in order to make an object or make a change.

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There is a picture of a " a screw, a wedge, wheel and axel, and a leaver. And the title page is "What is a Machine". So I predict this page will be about simple machines.

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