Perpetual motion machines without an additional energy input cannot exist because

Question

Quizplus · Accepted Answer

The law of conservation of energy states that energy cannot be created or destroyed, but it can be converted from one form to another. However, in any energy conversion, some energy is lost to heat or other forms of energy that cannot be harnessed. Therefore, a perpetual motion machine without an additional energy input cannot exist as it would violate the law of conservation of energy.

Perpetual Motion Machines Without an Additional Energy Input Cannot Exist