A machine that can run for eternity is exactly what we need...if only it could exist. A perpetual motion machine is impossible, here's why.

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An Analysis of A Perpetual Motion Machine
https://www.wired.com/2012/11/an-anal...
"Like most perpetual motion machines, the explanation can be a little complicated. Now let me show a couple of reasons why this method doesn't work. First, there is a problem with the claim that the rod doesn't push as hard on the top arm (c). Why? Because those two pieces don't even touch. Here is a screen shot during the rotational motion"

Science Explained: The Physics of Perpetual Motion Machines
https://futurism.com/what-physics-say...
"If you aren’t aware, the Big Freeze is the theoretical end of, well, everything. It is the point at which the universe has expanded so much that it reaches a state of zero thermodynamic free energy. In other words, it is the point at which the cosmos, as a whole, will be unable to sustain motion. All of spacetime will be at absolute zero (the coldest known temperature, where all movement stops)"

The Shifting-Mass Overbalanced Wheel. Why it isn't perpetual motion.
https://www.lockhaven.edu/~dsimanek/m...
"From the 8th century to the present time inventors have sought to achieve perpetual motion by use of wheels with shifting weights. None have worked, but that doesn't stop people from using the same idea again and again, altering mechanical details, often with incredibly complex designs. I call this "reinventing the square wheel"."

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