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Why are machines so important?

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Machines make our lives easier because they help us to do work.

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There are two main types of machines, simple and complex.

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Simple machines have few or no moving parts.

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Complex machines have several parts and contain simple machines.

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There are six simple machines, inclined plane, pulley, lever, screw, wedge, wheel and axle.

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We are going to look at three of them in detail, inclined plane, pulley and levers.

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We use inclined plane, pulleys and levers to move heavy loads.

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A load is the weight of an object.

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To move a load we have to apply effort.

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Effort is the amount of force required to move the load.

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So why are machines so important?

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Because machines make our lives easier.