Perpetual motion is the motion of bodies that continues forever in an unperturbed system. A perpetual motion machine is a hypothetical machine that can do work indefinitely without an external energy …

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6 days ago · Perpetual motion, the action of a device that, once set in motion, would continue in motion forever, with no additional energy required to maintain it. Such devices are impossible on grounds …

Mar 15, 2025 · Explore the fascinating physics behind perpetual motion machines and discover why they violate the laws of thermodynamics.

May 21, 2024 · The idea of perpetual motion sounds straightforward. An electric car powered this way could recharge its own batteries forever, and a clock could automatically rewind itself for years. But …

Perpetual motion machines are devices that are purported to create useful work for “nothing” by violating some physical principle. Generally they are divided into two types, perpetual motion machines of the …

Oct 4, 2011 · The first part of the sentence (up to “velocity”) suggests that perpetual motion is not only possible but inevitable for any object already in motion. The second part of Newton’s first law of …

Any motion that can be sustained without the need for any external sources of energy is referred to as perpetual motion. Note: A machine that operates on perpetual motion is a hypothetical machine.

Unfortunately, space isn't quite a void, and there is no true frictionless motion, so all bodies are "acted upon" constantly. Why would a planet orbiting the sun not be considered as perpetual motion?

When we talk about a perpetual motion machine, we usually mean a machine that produces power without being fed an even greater amount of power in a different form -- say an engine that produces …