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Homework Help: Confused with Work at an angle

  1. Dec 1, 2017 #1
    1. The problem statement, all variables and given/known data
    A sled is pulled across the barren winter landscape at an angle of 26.0° from the ground with a force of 74 N. If the sled is pulled over a distance of 27 m, how much work was done on the sled? Round your answer to two decimals

    2. Relevant equations
    W = f x s x Cos

    3. The attempt at a solution
    I calculated the force , 74, times 27 to get 1998. Then I multiplied 1998 by the cosine of 26 to get 1292.54 but it says that it's wrong. My teacher told me to think about the displacements but I don't get his meaning.
     
  2. jcsd
  3. Dec 1, 2017 #2
    You multiplied by cosine of 26 what ? Radians or degrees?
     
  4. Dec 1, 2017 #3

    PeroK

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    Is the sled being pulled over flat ground or up an incline?
     
  5. Dec 1, 2017 #4

    CWatters

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    Your method looks fine but see post #2.

    Your teachers is talking about a common error but it's one that you didn't make.
     
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