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Two forces at 45 pull an object distance of 14. What is work by both forces?

  1. Oct 20, 2008 #1
    What is the work done by the two forces together in moving an object a distance of d = 14 m as shown in the diagram? The magnitude of each force is 7 N.
     

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  2. jcsd
  3. Oct 20, 2008 #2

    LowlyPion

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    Separate the forces into components. What you are interested in are the force components in the direction that the block is actually moved.

    W = f * d.
     
  4. Oct 20, 2008 #3
    ya, so i found force by sqrt of 7^2 + 7^2. then i multiplied it by 7 and go 69.30 J. What am i doing wrong?
     
  5. Oct 21, 2008 #4

    LowlyPion

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    Isn't the distance it's moved 14?
    (The sqrt of 98 looks ok for the force in the direction of motion.)
     
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