A simple machine has efficiency 90%. What does it mean? No machine has 109 efficiency,why?

Question

asked Jun 1, 2022 26.5k views

1 Answer

Pavel Alekseev · Answer 1 · 2022-06-07T06:09:39+0000

Answer:

Efficiency of a machine is 90% this means that the total energy produced to the machine only 90% is useful and given as a output.

Machines are not 100% efficient because some of the work done by a machine is used to overcome friction