Question

Are all machines perfect? Give reason.​

Answer 1

Explanation:

Answer: In ideal machines , all the input energy should be converted to output energy . But , some part of energy is always lost in overcoming friction and input energy is always greater than output energy . Hence , no machine is ideal

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Answer 2

Answer:

In ideal machines , all the input energy should be converted to output energy . But , some part of energy is always lost in overcoming friction and input energy is always greater than output energy . Hence , no machine is ideal

Explanation:

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