Isekai Nonbiri Nouka - Vol. 13 Ch. 264 - Catapult (1)

[AquilaSilvestris]

A catapult? They should've made a trebuchet. They are far superior.

Henry Stickmin reference!

It actually pretty much is a (poorly designed) trebuchet, in that it works by dropping a counterweight.
Classical catapults worked through torsion from wound up cow muscles.