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You do an easy task, E.g pushing down on a pad and the way it works is in the pad there will be a small cannister containing fluid, and on the other end will be a slightly larger cannister, which will be empty. As you push down on the small one the liquid will travel across a pipe and push the bigger one up, which in turn will move something up using the tiniest of forces.

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14y ago

What else can I help you with?