Uprooting a tree stump with a wheel - GIF

[Saltfever]

There are two "advantages" here. Mechanical is the length of the fulcrum (i.e., diameter of the wheel) and the pivot point (the ground) lifting the trunk up via a horizontal force (the winch). The other advantage is that trees are designed to resist horizontal wind loads but not vertical loads. Pulling them up is easier.

Ask Marv for a better explanation!