if planetary motion is to be considered perpetual , then the answer is yes. Bcoz usage of gravity determined by the temperature of sun and the planet respectively keeps them in motion . similarly designing a machine running on no additional costs, by using forces of nature can also be termed as perpetuals . rather than considering the laws , many of their designs using nature as their support can be at least encouraged to produce power .They can be put to use to provide the needs of the hour for future development. Moreover in this Universe there is no possibility to create a perpetual machine, as any machine/least known particle can never escape the force of gravity. so y not utilise it to create green energies. if that is the case , i have seen and checked thoroughly a working prototype already which can produce 50Mw at only an one time investment of 2.5 million $ for millions of years to come.why not use them instead of dangerous+costly atomic power plants. fred7sofi@Yahoo.com
Because perpetual motion can not happen
No one, and no one ever will, since perpetual motion machines are a scientific impossibility.
That would have to be perpetual motion
No.
Neither first or second kind of perpetual motion machines can be constructed, beacuse their existence violates the first law of Thermodynamics
Because perpetual motion can not happen
Perpetual Motion Roadshow was created in 2003.
That question would really be tough to answer, because perpetual motion is not possible.
Perpetual Motion - album - was created on 2001-10-02.
Perpetual Motion - short story - was created in 1950-09.
Frenetic motion and perpetual motion.
Perpetual motion.
Perpetual Motion Machine - song - was created on 2009-07-17.
The cast of Perpetual Motion - 2003 includes: Gregory Madore
No one, and no one ever will, since perpetual motion machines are a scientific impossibility.
The Newton's cradle swings in perpetual motion.
Perpetual motion machines are theoretical only. No one has actually invented one. A perpetual motion machine would have to be able to provide its own source of energy to continue operating.