Divvying the Loot
Two pirates stole a lump of gold, and decided to split the loot by cutting it in half.
Due to its irregular shape, however, they weren't sure how to make an even cut.
After some back-and-forth, they decided they should hang it by a string and cut along the line where it balanced.
Which side in the diagram would you choose?
The shorter side has the greater mass.
Just as with a seesaw, balance is achieved by moving heavy things towards the fulcrum, and light things farther away.