5) Energy is lost as heat due to mechanical inefficiencies.
6) There are limitations in materials and technology that prevent a machine from achieving perfect efficiency.
7) External factors such as temperature, humidity, and wear and tear can affect the performance of a machine.
8) The law of conservation of energy dictates that some energy will always be lost in the form of heat or sound.
Why can a machine not achieve 100% efficiency in the real world?
Responses
1) Machines make the work it takes to do a job harder.
2) Machines must overcome forces of friction.
3) Output work will always be more than input work.
4) The distance over which a small amount of energy is applied increases.
3 answers
Out of the FOUR choices, which one is the best choice?
The best choice out of the four provided responses would be:
2) Machines must overcome forces of friction.
Friction is a major factor that contributes to energy loss in machines and can significantly reduce their efficiency. Overcoming friction requires additional energy input, leading to a decrease in overall efficiency.
2) Machines must overcome forces of friction.
Friction is a major factor that contributes to energy loss in machines and can significantly reduce their efficiency. Overcoming friction requires additional energy input, leading to a decrease in overall efficiency.
3 answers