Why it gets easier to push open a door, the further you are from the hinge?
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Leverage.
Have you ever tried to ride a seesaw with your friend but sitting closer to the middle? Its a lot harder to make it go up and down as opposed to if you two were sitting at the edges.
A lever requires more energy in order to move the closer you get to the fulcrum. THe hinges are the fulcrum.
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