why is it that machines are never 100% effiecient?.....................?

Question

discuss the relationship of mechanical advantage of a machine to efficiency.

Answer 1

Because part of the energy leaks away somehow, usually by heating the surrounding.

Answer 2

There is a law called "The Conservation of Energy" that says that energy cannot be created or destroyed, and that the amount of energy put into a situation must equal the amount coming out of that situation.

However, since everything produces heat (though methods like friction, and excessive electron flow, etc.), some of the energy that went into the situation comes out as "waste heat".

To have 100% eefficiency, you would need to have a machine that creates absolutely 0 Joules of heat. or... a machine that is specifically used to produce heat (think of a space heater; their purpose is to produce heat, so any excess heat just adds to the intended product, making it 100% efficient).

Answer 3

This is because due to some physical imperfections (however slight), the machine encounters some degree of friction that siphons off energy in the form of heat.




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Answer 4

2nd law of thermodynamics. Every machine loses some energy as heat due to friction etc.

Answer 5

Because living human kind is not the creator of heaven and earth.
Ever wonder how Mr. Big Brother kick the butts of living human kind with the creation of the Iraq war?
The blunders and slip-ups with human errors in messing up with science and mathematics getting ourselves kick on the butts by artificial intelligence in making a mess living in misery on planet earth.

Answer 6

machines can never be 100% efficient as natural changeability such as friction , pressure etc. effect there working.