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Weak and strong interaction are attactive or repulsive force?

  1. Jun 13, 2009 #1
    As we know:Gravitation is attractive force, electric force is attractive and repulsive force.

    Weak and strong interaction are attractive or repulsive force?
  2. jcsd
  3. Jun 14, 2009 #2
    The repulsion/attraction of the strong interactions depends on the color charges of the particles involved, just as the repulsion/attraction of the E&M force depends on the electric charges. Similarly for the weak interactions. Gravity is the only force which is always attractive.
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