Conservation of Energy
Also known as: energy conservation
Energy cannot be created or destroyed, only transformed from one form to another. The most fundamental principle in all of physics — it applies to every process in the universe.
💡 Intuition
Energy is like money—you can spend it, save it, or change its form, but you can't make more out of nothing.
Core Idea
The total energy in a closed system always remains constant — it changes form but never disappears.
🔬 Example
🎯 Why It Matters
The most fundamental principle in all of physics — it applies to every process in the universe.
⚠️ Common Confusion
Energy 'lost' to friction isn't destroyed — it converts to thermal energy, which is harder to recover.
Related Concepts
Prerequisites
Next Steps
How Conservation of Energy Connects to Other Ideas
To understand conservation of energy, you should first be comfortable with kinetic energy and potential energy. Once you have a solid grasp of conservation of energy, you can move on to work energy theorem and thermal energy.
Go Deeper
Frequently Asked Questions
What is Conservation of Energy in Physics?
Energy cannot be created or destroyed, only transformed from one form to another.
Why is Conservation of Energy important?
The most fundamental principle in all of physics — it applies to every process in the universe.
What do students usually get wrong about Conservation of Energy?
Energy 'lost' to friction isn't destroyed — it converts to thermal energy, which is harder to recover.
What should I learn before Conservation of Energy?
Before studying Conservation of Energy, you should understand: kinetic energy, potential energy.
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