8 Physics Principles

The principles of physics are the shared rules and vocabulary used to describe the systems and interactions of the natural world.

An interaction is an influence: a mutual push or pull between objects. A system is an entity: a chosen collection of objects studied as one unit.

The principles of physics are related to conservation of energy and momentum because those totals for an isolated system are independent of the path taken and of the internal details of the process.

8.1 Topics

1. Fields
2. Potential
3. Potential Difference
4. Force
5. Four Fundamental Forces
6. Energy
7. Work
8. Power
9. Momentum
10. Mass
11. Charge
12. System

8.2 References

1. Feynman, R. P., Leighton, R. B., & Sands, M. The Feynman Lectures on Physics, Vol. I. Ch. 1–2, 4, 10–11 — the shared laws of physics, systems, interaction, and conservation of energy and momentum.
2. Feynman, R. P., Leighton, R. B., & Sands, M. The Feynman Lectures on Physics, Vol. II. Ch. 2, 8, 12 — fields, and conservation independent of the internal mechanism.
3. Knight, R. D. Physics for Scientists and Engineers: A Strategic Approach with Modern Physics. Pearson, 2023. — force, energy, work, power, momentum, mass, charge, and system.

• Charge
• Energy
• Fields
• Force
• Four Fundamental Forces
• Mass
• Momentum
• Potential
• Potential Difference
• Power
• System
• Work