0
Because perpetual motion can not happen
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
Why is imposible to create perpetual motion machine?
From the second law of thermodynamics, "It is impossible to convert heat completely into work in a cyclic process." Thus, energy in a system is gradually lost. Because of this, the energy will eventually run out (though it may take a very long time), and perpetual motion is impossible.
Why do living beings and machines need energy?
In physics, energy is required for work to be performed. If you have a machine that you want to just sit somewhere, it doesn't need any energy. If you want a machine to actually do something, then it needs energy. In space, a satellite can travel millions of miles without any added energy (just the energy required to set it on its path). In a sense, a form of perpetual motion. On earth, true perpetual motion doesn't exist. If one doesn't want a machine to stop due to friction and other forces, then one must add energy.
If the output force is greater than the input force of a simple machine Is the mechanical advantage is less than one?
No, the mechanical advantage is greater than 1. If you input a force of 1 unit you get out a force of 1+ units. However keep in mind that if this were a PERFECT machine the amount of WORK INPUT is EQUAL to the the amount of WORK OUTPUT. Since perfection is not possible, and there are frictional losses this is not possible. Otherwise you could have a perpetual motion machine, which is not yet possible.
How the output work compares to the input work in a machine?
I would say that the output would be less. What would you think? Actually it matters what machine your talking about but hopefully ur output work would be more then your input work because that would mean the machine is doing more. This would mean its more efficent
What are the circumstances for which the output work would equal the input work in a machine?
The machine would be one with 100% efficiency. None of those are available.
If a perpetual motion machine could be but in real life could it be used to do work?
There is no answer to your question because a perpetual motion machine is impossible. If one could be built, its own motion would be considered work.
How does a perpetual motion machine work?
it depends on what you use to build it
What is Perpetual Motion Machine first kind?
A perpetual motion machine of the first kind it what we usually mean by a perpetual motion machine. A device which once started will continue to run and do useful work forever without the need to add energy to keep it going. The laws of physics make such a device impossible.
What law of thermodynamics allows perpetual energy machines?
The first law might allow a perpetual energy machine where energy is extracted from the surroundings to power the machine, but the second law explains why such a perpetual motion machine won't actually be able to work.
Why can't perpetual motion work?
Perpetual motion would only work in a perfect environment - perfect vacuum - zero friction, zero resistance. The best we can hope for is to minimize the input energy - increase efficiency...
How does a mechanical baby swing work?
Perpetual motion.
Does the magniwork generator really work?
They only work in places where the laws of physics don't. It's a perpetual motion machine scam. For more information visit the Related Link.
Why is imposible to create perpetual motion machine?
From the second law of thermodynamics, "It is impossible to convert heat completely into work in a cyclic process." Thus, energy in a system is gradually lost. Because of this, the energy will eventually run out (though it may take a very long time), and perpetual motion is impossible.
Acoording to second law thermodyamic there is no machine which doenot work on extenal agenice but how Cosmic Polymath prepared a Perpetual motion machine?
A "perpetual motion" machine basically is one that violates either the First or the Second Law of Thermodynamics. This really isn't possible, according to our current knowledge of physics. Nobody - I repeat, NOBODY - has ever created such a machine. Sure, there have been lots of claims about creating such machines, but no such claim has stood up to a close scrutiny.
Is perpetual motion theoretically possible using gravity as a constant source of energy?
No. Perpetual motion is equivalent to "infinite energy", and is not the first law of thermodynamics "Mass-energy is neither created nor destroyed"? You would have to do at least the same amount of work lifting objects up against gravity as you would get out of the system from gravity.
What is a device in which work output equals work input?
A perfectly efficient machine, which doesn't exist in the natural world. The reason it doesn't exist is because any kind of work gives off energy byproducts (for instance, heat differential, friction, so on and so forth). Kind of like a perpetual motion device (which you could make by linking the outputs to the inputs on a perfectly efficient machine).ideal machine
Why do living beings and machines need energy?
In physics, energy is required for work to be performed. If you have a machine that you want to just sit somewhere, it doesn't need any energy. If you want a machine to actually do something, then it needs energy. In space, a satellite can travel millions of miles without any added energy (just the energy required to set it on its path). In a sense, a form of perpetual motion. On earth, true perpetual motion doesn't exist. If one doesn't want a machine to stop due to friction and other forces, then one must add energy.
