The mechanical advantage of a machine if all input force converted into output force is converted into output force. Ideal mechanical advantage is impossible in real life because of other external forces like sound energy, heat energy, etc.
Actual Mechanical Advantage
The mechanical advantage of a machine in real-life situations; equal to ideal mechanical advantage minus the force lost to distortion, sound, friction, and slippage
Physical System
A system made of different parts, e.g. a tree or a car
Social System
A system made of individual organisms working together to do a job, e.g. a football team or a wolf pack
Systems
A group of parts that work together to do something, e.g. a can opener and/or orchestra
Structure
An object built for a purpose, usually designed to withstand certain forces
Simple machines
A device that requires a single force to work, made for only one or two parts
Force
A push, pull or twist that changes an object's speed, shape or direction, measured in Newtons (N)
Mechanical advantage (MA)
The ratio of output force to input force for a given machine, it's how many times easier it is to do something
Work
The result when a force moves an object a certain distance
