Why it gets easier to push open a door, the further you are from the hinge?

Question

Why it gets easier to push open a door, the further you are from the hinge?

In: 212

Answer 1

Head down to your local park and check out the see-saw, the beam is the lever and the pivot is the falcrum.

On a door the hinge is the falcrum, and door is the lever, but the opposite side of the see-saw is 0 length.

But same princibles apply close to falcrum little movement, less fun, away from falcrum, more movement less force required.