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Homework Help: Friction and Pully

  1. Nov 8, 2007 #1
    An 8.0-kg hanging block is connected by a string over a pulley to a 6.5-kg block sliding on a flat table. If the coefficient of sliding friction is 0.28, find the tension in the string.

    is the answer 41.02 N ?
     
  2. jcsd
  3. Nov 8, 2007 #2
    How did you work it out?
     
  4. Nov 8, 2007 #3
    ((8*9.8)/2)+(6.5*.28)
     
  5. Nov 8, 2007 #4
    so, we assume that the 6.5 block is sliding? not at rest?
     
  6. Nov 9, 2007 #5

    i guess so
     
  7. Nov 9, 2007 #6
    well, draw the free body diagrams..and find what the acceleration is. Since they are both connected by a string, they will accelerate (different directions) with the same magnitudes.
     
  8. Nov 9, 2007 #7
    getting the free body diagram correct is essential
     
  9. Nov 9, 2007 #8
    well i am getting an answer in the 40s, i dont want to say the answer.. anyway i gotta go.
     
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