Assertion: catapult | /r/CapableOf | use gravity
Facets:
value: as the energy source
type: MANNER
value: to propel the throwing arm
type: PURPOSE
value: to hurl its projectile
type: PURPOSE
Source sentences:
text: The term “catapult” is used to define a very wide variety of large machines for hurling projectiles and some of the more common variations include the trebuchet, which is a catapult that uses gravity and a seesaw effect to hurl its projectile.
text: A catapult is a device that can hurl large objects like rocks very far, using an energy source like gravity or a tightly twisted rope, which would unwind when let go (just like twisting up a rubber band and then releasing it).
text: It was extraordinarily powerful and was easier for military engineers to build because it used gravity as the energy source.
text: It was extraordinarily powerful and was easier for military engineers to build because it used gravity as the energy source.
text: It was extraordinarily powerful and was easier for military engineers to build because it used gravity as the energy source.
text: It was extraordinarily powerful and was easier for military engineers to build because it used gravity as the energy source.
text: The most sophisticated catapult is a trebuchet, which uses gravity rather than tension or torsion to propel the throwing arm.