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Homework Help: Pulleys relating to physics question

  1. Apr 11, 2010 #1
    Diagram kkk.jpg

    1. The problem statement, all variables and given/known data
    Consider the two body system above. There is a 0.25kg object accelerating across a rough surface. The sliding object is attached by a string to a 0.1kg object which is suspended over a pulley. the coefficient of kinetic friction is 0.183. Calculate the acceleration of the block and the tension in the string.

    2. Relevant equations
    Fg=mg
    Fnet=ma


    3. The attempt at a solution

    i got the acceleration to be 1.5...m/s^2 i dont know if it is right

    fn=fg=mg 0.25 x9.81m/s^2 =2.4525N
    ff=ufn
    ff=0.183 x 2.4525N =0.4488075 ff=fg since fn=fg

    fg2= 0.1 x 9.81 =0.981 then subtracted them to get fnet then divided by the total mass to get 1.502025m/s^2
    =0.4488075N
     
    Last edited: Apr 11, 2010
  2. jcsd
  3. Apr 11, 2010 #2

    rock.freak667

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    Homework Helper

    How did you get that answer? What exactly did you do? Can you please post your working?
     
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