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OpenStudy (anonymous):
why is the efficiency of a machine always less than 100 percent
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OpenStudy (anonymous):
The efficiency of a machine is always less than 100 percent due to the following reasons: 1. The work input is always greater than work output. 2. Part of the energy input is used to overcome friction. 3. Part of the energy input is used to overcome gravitational force
OpenStudy (frostbite):
Or we just look upon the 2. law of thermodynamics.
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