What is Machine?
Machine as a combination of resisting bodies with successfully constrained relative motions which is used to transform other forms of energy into mechanical energy or transmit and modify available energy to do some useful work.
Machines receive mechanical energy and modify it so that a specific task is carried out.
This modification or transformation of energy requires a number of machine elements, some small and some bigger components.
Machine design involves primarily designing these elements/components so that they may transmit the forces safely and perform their task successfully.
