Recent content by zackiechan

  1. Z

    The Energy of a Continuous Charge Distribution (Griffiths EM Sect. 2.4.3 3rd ed)

    I'm working through Griffiths EM 3rd ed. in section 2.4.2 (point charge distribution) and 2.4.3 (continuous charge distribution). I understand from the section on point charge distributions that when we add up all the work (excluding the work necessary in creating the charge itself), one clever...
  2. Z

    Derivation of the energy principle from Gregory Classical Mechanics textbook

    Thank you very much for the response. I really like the logic behind the potentials being time independent!
  3. Z

    Derivation of the energy principle from Gregory Classical Mechanics textbook

    I'm working through Gregory's Classical Mechanics and came across his derivation of energy conservation for a system of N particles that is unconstrained. We get to assume all the external forces are conservative, so we can write them as the gradient of a potential energy. There's a step he...