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A great deal of effort, time, and money has been spent in
Chapter 15, Problem 8(choose chapter or problem)
Problem 8CQ
A great deal of effort, time, and money has been spent in the quest for the so-called perpetual-motion machine, which is defined as a hypothetical machine that operates or produces useful work indefinitely and/or a hypothetical machine that produces more work or energy than it consumes. Explain, in terms of heat engines and the first law of thermodynamics, why or why not such a machine is likely to be constructed.
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QUESTION:
Problem 8CQ
A great deal of effort, time, and money has been spent in the quest for the so-called perpetual-motion machine, which is defined as a hypothetical machine that operates or produces useful work indefinitely and/or a hypothetical machine that produces more work or energy than it consumes. Explain, in terms of heat engines and the first law of thermodynamics, why or why not such a machine is likely to be constructed.
ANSWER:Solution 8CQ
Perpetual motion of the first kind is impossible because it violates the first law of thermodynamics that is conservation of energy. It produces work without the input of energy.
According to the first law of thermodynamics,
ΔQ = ΔU +W
Here, ?U is the change in internal energy, ?Q is the change in heat energy and W