Trabuco is a war weapon used mostly during siege situations during the middle ages to crush walls or fire projectiles over the walls. The weapon is similar to a catapult, and most people recognize it as the balancing Trabuco. It consists of a giant arm mounted on a cart, a movable base or even a car. In the Trabuco model of counterweight, a counterweight pulls the arm by casting a projectile (which could be a stone or object) from its resting point in the sling which is located opposite the counterweight.
Remember How David killed Goliath with a sling? Trabuco can be big or made small in size, but all of them, when designed correctly, employ the principle laws of physics (levers) of converting gravitational energy into Kinetic energy. But not all of the energy will be transformed; some of it will be lost in the form of friction. Hence the weight of the projectile will determine the speed and distance it will travel.
Use of Trabuco was first reported in China in 400 BC, and its usage infiltrated Europe in 600 BC according to pt.bab.la. Unconfirmed sources indicate that Trabuco was used during an attack to launch diseased bodies to attackers with the aim of infecting them, meaning biological warfare isn’t something new.
Trabuco is popular in Brazil, and most people refer to it when talking about revolvers or shotguns.
It was then used until the emergence of gunpowder which replaced it due to the effectiveness and destruction capabilities of gunpowder. The last military attacked registered to have used Trabuco was by Hernán Cortés in 1521 to attack the Aztec capital according to banco.bradesco. And they used it due to lack of gunpowder.
Also in 1779, British soldiers went to war with insufficient guns, and so they constructed Trabuco, considering the advancement and the point in time, it is not indicated whether the Trabuco helped them.
Well, in the modern world, Trabuco has a very different use. Some people use it for fun while others use it to illustrate core mechanics principles. Also, interestingly, no more constructions of Trabuco, only one or two that were used in ancient battles and help for several years.
History scholars are using them to develop critical historical occurrences and prove intelligence levels on priberam.pt.
Search more about Trabuco: http://tudo-sobre.estadao.com.br/trabuco