Why do perpetual motion machine not work?

A perpetual motion machine of the first kind produces work without the input of energy. It thus violates the first law of thermodynamics: the law of conservation of energy. This conversion of heat into useful work, without any side effect, is impossible, according to the second law of thermodynamics.

Has a working perpetual motion machine ever been built?

Despite many attempts, and many claims, of having built a perpetual motion machine, (see Steorn’s recent Orbo device) no one has, for one very simple reason. They are impossible. Not impossible however, is a device which uses available energy, solar or water for example, to do its work for it.

What would happen if someone invented a perpetual motion machine?

Originally Answered: What would happen if a perpetual motion machine existed? Absolutley nothing. The energy generated would be exactly the same as the energy consumed.

What is perpetual motion machine of second kind Why such a machine Cannot be constructed in actual practice?

This kind of machine is impossible, since it violates the Second law of thermodynamics. Heat cannot be transferred from a colder to a hotter body. Therefore, it must be cooled by refrigeration for the ammonia to be condensed, which requires more energy than the energy produced by engine.

Why do magnet motors not work?

Practical implementations fail because there is no substantial energy in magnets that could be employed for propulsion or to compensate for energy losses. The force between permanent magnets is conservative as the magnetic field follows a potential, so that there is no work done over a closed cycle.

What are some examples of perpetual motion machines that people have reported to have built or tried to build?

The design of one machine was such that it supposedly kept spinning indefinitely due to an imbalance created by containers of mercury around its rim. Other examples of attempts at a perpetual motion machine include 16th Century windmills, 17th Century siphons, and some water wheel designs.

Which law of thermodynamics does perpetual motion machine II PMM II work on explain it with neat sketch?

ANSWER: perpetual motion machine of second kind (PMM2) According to the Kelvin-Planck statement of second law of thermodynamics, it is impossible to produce a heat engine, whose sole effect is to absorb energy in the form of heat from a heat source and produce an equal amount of work.

Do magnets last forever?

So how long should my permanent magnet last? Your permanent magnet should lose no more than 1\% of its magnetic strength over a period of 100 years provided it is specified and cared for properly. There are a few things that may cause your magnet to lose its strength: HEAT.

Why is a windmill not a perpetual motion machine?

Starts here5:31Why don’t perpetual motion machines ever work? – Netta SchrammYouTube

Why is PMM 2 Impossible?

ANSWER: perpetual motion machine of second kind (PMM2) This is due to that some heat has to be rejected to sink. Therefore this heat engine violates the Kelvin-Planck statement of second law of thermodynamics. Hence it will be a perpetual motion machine of second kind (PMM2). PMM2 is impossible to produce.