What is perpetual motion? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 12 Students CBSE Exams.
What is perpetual motion?
Scientists once believed that they could create a perpetual motion machine which could continue working even if energy is not supplied to it. But this is not possible. Even in the most efficient machine, energy is lost as heat. This ensures that all the energy that the machine has is used up.
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