Both catapults and ballistas work by storing tension either in twisted ropes or in a flexed piece of wood (in the same way an archery bow does, but on a larger scale). A trebuchet tends to be easier to build because it consists simply of a pivoting beam and a counterweight that rotates the beam through an arc.
These simple machines are the lever, the pulley, the wheel and axle, the incline, the wedge, and the screw. Compound machines are used to make work easier. A compound machine is made up of more than one type of simple machine. Common examples include scissors, shovel, wheelbarrow, pencil sharpener, and can opener.
The different types of energy included in a catapult are kinetic and potential energy. Along with the different types of energy involved in a catapult, there is also several different forms of energy involved such as elastic, heat, sound and gravitational potential energy. "Catapult Physics."Mar 18, 2014
A catapult is a ballistic device used to launch a projectile a great distance without the aid of explosive devices—particularly various types of ancient and medieval siege engines.
A slingshot or catapult (UK), ging (primarily Australian and New Zealand), shanghai (Australian), gulel (India), kettie (South Africa), bean shooter, or flip or tirador (primarily Tagalog), is normally a small hand-powered projectile weapon. ... The other ends of the strips lead back to a pocket that holds the projectile.
- Catapults are any device that throws an object, although it commonly refers to the medieval siege weapon. - Trebuchets are a TYPE of catapult, using gravity (with a counterweight) or traction (men pulling down), to propel the arm and often employing a sling at the end of the arm for greater distance.Aug 4, 2008
The sling is not what makes it a trebuchet instead of a catapult. Catapults get energy from tension (usually torsion) and the arm hits a stop near the top of its arc to release the projectile. Trebuchets get their energy from gravity.Oct 29, 2013