Question: Mechanical efficiency is a variable that measures the effectiveness of a machine in transforming the energy input to the machine and energy output. Mathematically, mechanical

Mechanical efficiency is a variable that measures the effectiveness of a machine in transforming the energy input to the machine and energy output. Mathematically, mechanical efficiency has a formula of "energy output/ energy input". For example, the input energy for a fossil-fuel power station is the energy from burning fossil-fuel (e.g., coal) and the output energy is the electrical energy carried by the produced electricity. Mechanical efficiency is always less than 1. In other words, output energy is always smaller than input energy. Analyze whether this fact violates the law of energy conservation

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