Engine (such as pneumatic motors), springs (clockwork motors) and elastic bands. Historic military siege engines included large catapults, trebuchets, and (to some extent) battering rams were powered by potential energy. A pneumatic motor is a machine that converts potential energy in the form of compressed air into mechanical work. Pneumatic motors generally convert the compressed air to mechanical work though either linear or rotary motion. Linear motion can come from either a diaphragm or piston actuator, while rotary motion is supplied by either a vane type air motor or piston air motor. Pneumatic motors have found widespread success in the hand-held
Binding energy Binding energy Binding energy (also called separation energy) is the "minimum" energy required to disassemble a system of particles into separate parts. This energy is equal to the mass defect - the amount of energy, or mass, that is released when a bound system (which typically has a lower potential energy than the sum of its constituent parts) is created, and is what keeps the system together. If the energy supplied is more than the binding energy, then the disassembled constituents possess non-zero kinetic energy. In general, binding energy represents the mechanical work that must be done against the forces