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Vectorial description of two forces

  1. Apr 27, 2009 #1
    I need to know if it's posible that this two vectors could be the same:

    [tex]\vec f_1_2 = \vec v_1_2 [ \frac {\partial q_1_2 \vec E_1_2} {\partial t} + \nabla( \vec E_1_2 \vec v_1_2 ) ]+ q \vec E_1_2 [ \frac {\partial \vec v_1_2} {\partial t} + ( \vec {v_1_2} \nabla ) \vec v_1_2 ][/tex]

    [tex]\vec f_2_1 = \vec v_2_1 [ \frac {\partial q_2_1 \vec E_2_1} {\partial t} + \nabla( \vec E_2_1 \vec v_2_1 ) ]+ q \vec E_2_1 [ \frac {\partial \vec v_2_1} {\partial t} + ( \vec {v_2_1} \nabla ) \vec v_2_1 ][/tex]

    How must I start to know how to "force" the conditions to make the two vectors, equal?
  2. jcsd
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