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Math Help - tami1215

  1. #1
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    tami1215

    I have a question about distance. how big does a circle have to be for it to lokk like you're walking in a straight line? I can't find the answer anywhere and I don't know how to calculate the answer. Thank-you. T
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  2. #2
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    Quote Originally Posted by tami1215 View Post
    I have a question about distance. how big does a circle have to be for it to lokk like you're walking in a straight line?
    That is a purely subjective question.
    The curvature is the measure of how quickly the tangent to the curve is changing direction. Because lines have curvature of zero, you are asking: how large does the radius need to be in order for the curvature is almost zero? How close to zero do you think do you need?
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  3. #3
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    tami1215

    I'm thinking a curve of less than 10 degrees?
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  4. #4
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    tami1215

    I'm sorry, I think my question is poorly phrased and causing some confusion. For me at least. I want to find the circumfence? of a sphere that is large enough that if I were to walk around it the curvature would not be noticable. But I also need to find the smallest sphere where that would be possible. Thank-you T
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