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It is not possible to get a perfect Machine in our practice, why?​
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It is not possible to get a perfect Machine in our practice, why?​

User Bartvds
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17 votes

Answer:

No machine is perfect because some part of the work done on a machine is always used up or wasted in overcoming the friction between the moving parts of the machine. If a machine is 80% of the work input to the machine is obtained as the useful work output.

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User Arosha
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