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Examples of a class-one lever are a pair of pliers and a crowbar. For example, it would take a force of N to lift the load in the animation below. But using a lever - a rod with the fulcrum placed closer to the load than the point of effort - it only requires a force of N.

Press play to see a demonstration. Your web browser does not have JavaScript switched on at the moment. For information on how to enable JavaScript please go to the Webwise site. A class 2 lever has the load and the effort on the same side of the fulcrum, with the load nearer the fulcrum. Examples of a class-two lever are a pair of nutcrackers or a wheelbarrow. In the diagram, the wheel or fulcrum on the wheelbarrow is helping to share the weight of the load. This means that it takes less effort to move a load in a wheelbarrow than to carry it.

Class 1 and class 2 levers both provide mechanical advantage. This means that they allow you to move a large output load with a small effort. Load and effort are forces and are measured in Newtons N. Writing for us is the best way to start earning because you do not need any setup charges. Need to earn money writing papers for students? We are online - chat with us.

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