it is impossible to get
perfect machine in
practical life, why?
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0
Answer:
A machine whose efficiency is 100% is practically impossible to make as a 100% efficient machine has 0 mass and has 0 friction between its parts, which is impossible to achieve.
Answered by
0
Answer:
In practice however 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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