shristithapa12 shristithapa12

27-07-2021
Physics

contestada

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

Respuesta :

manjaririjal4 manjaririjal4

27-07-2021

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

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