Describe the circumstances for which the output work would equal the input work in a machine

The output work circumstances would be the fact that the machine could do a good amount of time at a good pace, and distance. where the machine doesn't need any help to be controlled. the input work would be you being able to use the machine with no difficulty. you are the client the machine is your server, you command, and the machine obeys.

You can find results and justify them? you can test your hypothesis