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Homework Help: Forces and energy in a system of a group of walkers

  1. Dec 10, 2013 #1
    I am studying a system of a group of walkers and how they behave.
    There are four kind of forces:
    - Repulsion between walkers
    - A force modeled by the fact that all walkers gather into groups and walk in the same direction so their velocity are // that i will name S.
    - "Autopropulsion" walkers move spontaneously in the same direction of the walker's velocity
    - Random force in a random direction caused by uneven grounds, projectiles etc..

    I want to know what forces give energy to the system and take energy from it

    Just correct me if i'm wrong :
    Repulsion and autopropulsion dissipate energy because after a certain amount of time the walkers don't move anymore
    The force S and the random force give energy, the walkers keep moving, the kinetic energy increases.

  2. jcsd
  3. Jan 9, 2015 #2
    First, are the walkers living things? If yes, then are the four forces caused by the intentional movement of the walkers? or are they forces due to nature?
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