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Law of conservation of energy

  1. Aug 5, 2008 #1
    Is there an equation for the law of conservation of energy?
  2. jcsd
  3. Aug 5, 2008 #2


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    There are numerous mathematical statements of the concept of conservation of energy, depending on which field the concept is applied to.
  4. Aug 5, 2008 #3


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    How about
    [tex]E_1+ E_2+ \cdot\cdot\cdot+ E_n= C[/tex]
    where [itex]E_1[/itex], [itex]E_2[/itex], [itex]E_n[/itex] are all the different kinds of energy in a system and C is a constant? In other words, energy can change from one form to another or from one object to another but in a given isolated system the total remains constant.

    I started that a little facetiously but we use "kinetic energy+ potential energy= constant" in simple problems all the time.
  5. Aug 5, 2008 #4


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    Only a little facetiously - there are lots and lots of problems that are solved by writing an energy conservation statement and solving it (or the similar sum of forces = 0).
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