🔬 Everyday Science

According to the principle of conservation of energy, what happens to the total mechanical energy of an object in a system where only conservative forces (like gravity or spring force) are doing work?

A It increases
B It decreases
C It remains constant
D It oscillates

✓ Correct Answer: Option C

The principle of conservation of mechanical energy states that if only conservative forces are doing work, the total mechanical energy (sum of kinetic and potential energy) of a system remains constant.

💡 Why is C) the correct answer?

The correct answer to the question "According to the principle of conservation of energy, what happens to the total mechanical energy of an object in a system where only conservative forces (like gravity or spring force) are doing work?" is Option C: It remains constant.

The other options — A) It increases, B) It decreases, D) It oscillates — are incorrect for this Everyday Science question. As explained above: The principle of conservation of mechanical energy states that if only conservative forces are doing work, the total mechanical energy (sum of kinetic and potential energy) of a system remains consta…

📚 About This Everyday Science Practice Question

This 2-level Everyday Science question from the Physics - Heat, Light, Sound topic is part of One Paper Preparation's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free Everyday Science practice test or use flashcards for spaced repetition review.

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