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Math Help - critical thinking trig problem

  1. #1
    Member sinewave85's Avatar
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    critical thinking trig problem

    "There are two and only two vectors acting on a point. The system is in equilibrium. Must the vectors be opposites?" Or, in other words, is the only pair of vectors that can produce equilibrium a pair of opposites?

    Thinking about it in terms of geometric addition, it seems like the answer must be yes, but I was hoping someone could verify it for me one way or the other. Thanks.
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by sinewave85 View Post
    "There are two and only two vectors acting on a point. The system is in equilibrium. Must the vectors be opposites?" Or, in other words, is the only pair of vectors that can produce equilibrium a pair of opposites?

    Thinking about it in terms of geometric addition, it seems like the answer must be yes, but I was hoping someone could verify it for me one way or the other. Thanks.
    I would of thought so.

    RonL
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    Forum Admin topsquark's Avatar
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    Thinking about it analytically you have two vectors a and b. They add to 0. What is b in terms of a?

    -Dan
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