Machines must overcome forces of friction.
Why can a machine not achieve 100% efficiency in the real world?(1 point)
Responses
Machines make the work it takes to do a job harder.
Machines make the work it takes to do a job harder.
Output work will always be more than input work.
Output work will always be more than input work.
The distance over which a small amount of energy is applied increases.
The distance over which a small amount of energy is applied increases.
Machines must overcome forces of friction.
1 answer
3 answers