what is the difference between an ideal machine and a practical machine. give in two points atleast other than the examples.
Answers
In ideal machine there is no loss of energy where as in practical machine there is lose of energy in the form of heat
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An ideal machine is that in which there is no loss of energy in any manner hair the work output is equal to the work input that is the efficiency of an ideal machine is 100%
Whereas an actual machine, the output energy is always less than the input energy that is there is some loss of energy during its operation.
The loss of energy in Amazon is due to the following three reasons
1. The moving part in it are neither weightless not smooth or frictionless.
2. The string in it (if any) is not perfectly elastic.
3. It's different part are not perfectly rigid.
The most prominent loss in energy is in overcoming the force of friction between the moving part of a machine the energy so lost appear as he due to which the moving part of machine get heated.
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