Respuesta :
Answer: Don’t listen to the other person, B is incorrect. A is the correct answer.
Explanation: The law of conservation of energy states that energy cannot be created nor destroyed. B says that the mechanical energy disappears, but this is wrong. It changes into another energy, but the energy doesn’t disappear.
What happens to the motion of the pendulum due to the law of conservation of energy is that the mechanical energy transforms to thermal energy as the pendulum slows and eventually stops moving. Option A.
What does the law of conservation of energy state?
The Law of Conservation of energy says that the amount of energy in an isolated system remains always the same, it does not increase nor decrease.
However, energy can be transformed and converted from one form of energy to the other.
Energy can not be created nor destroyed, it just changes from one form of energy to another.
This Law is, basically, giving us the answer to the question.
In the exposed example, the pendulum moves, and as it does it loses a part of the mechanical energy due to friction in the mechanical elements.
This lost mechanical energy is turned into the form of thermal energy.
Eventually, the complete transformation of mechanical energy into thermal energy causes the pendulum to stop.
The best explanation of what happens to the motion of the pendulum due to the law of conservation of energy is that the mechanical energy transforms to thermal energy as the pendulum slows and eventually stops moving.
You will learn more about the law of conservation of energy at
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