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Homework Help: Angular displacement question

  1. Mar 31, 2015 #1
    1. The problem statement, all variables and given/known data
    I play swing a yo yo above my head in a circular horizontal motion.
    The yoyo travels around 370 degrees.
    what is the angular displacement?
    2. Relevant equations

    3. The attempt at a solution

    would I say the angular displacement is 10 degrees? or still 370 degrees? or would both work? which one is preferred if both work?
  2. jcsd
  3. Mar 31, 2015 #2


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    2017 Award

    A horse working to keep a water wheel going walks in circles. It knows the difference between 0 degrees and 36000 degrees displacement !

    Idem for a sailor operating a winch: he does ten times as much work for a 3600 degree angular displacement as for a 1 full turn angular displacement. But his angular position after an integer number of turns is indistinguishable from the initial angular position.

    On a practical note: it depends. So some judgment is indispensable.
  4. Mar 31, 2015 #3
    What is the difference between displacement and distance? Can you apply the same concept to angular displacement?
  5. Mar 31, 2015 #4
    displacement is how the distance from starting point to ending. which is 10 degrees

    distance is total distance traveled, which is 370 degrees.

    but would i be wrong if i said displacement is 370 degrees?
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