Performance Measurement: One Sample Framework for Selecting Measurements. Â© Copyright Carter McNamara, MBA, PhD, Authenticity Consulting, LLC. Organizations try to manage the performance of each employee, team and process and even of the organization itself. The performance management process is very similar, regardless of where it is applied.
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. Catapults can launch things a fair distance -- 500 to 1,000 feet (150 to 300 meters) is common. It is surprising how much energy they can store. The gears are important, because they create a winch. The winch allows a person to put a great deal of energy into the catapult over a period of time.
The catapult armature was attached to this drum which would be turned until enough potential energy was stored in the deformation of the spring. The drum would then be disengaged from the winding mechanism, and the catapult arm would snap around.