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2 years ago

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

2 answers:

Marrrta [24]2 years ago

7 0

Answer:

<em>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.</em>

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

Novay_Z [31]2 years ago

7 0

Explanation:

A simple machine has efficiency 90% means that 10% of the applied effort is wasted due to overcoming friction and 90% of the applied force is used in doing useful work .No machinr has hundred percent efficiency because every machine is affected by overcoming friction .

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