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Homework Help: Elephant and hydraulic lift

  1. Oct 4, 2008 #1
    1. The problem statement, all variables and given/known data

    http://img186.imageshack.us/my.php?image=gdgdfgta2.jpg

    the question is on the above link (PART B()

    2. Relevant equations

    deltaF=pg(A1+A2)d2

    3. The attempt at a solution
    deltaF=pg(A1+A2)d2
    i used that formula and found that the distance was 0.35m
     
    Last edited: Oct 4, 2008
  2. jcsd
  3. Oct 4, 2008 #2
    Hehe never took the course but got 0.48 as an answer. Don't forget that the area of a circle is (pie)(r^2). Also little hint: units of pressure are 1Pa = 1N/m^2!, in this case the pressure on both sides are the same.

    edit: what formula is used for part b?
     
  4. Oct 4, 2008 #3
    i have no idea ..i used deltaF=pg(A1+A2)d2
    and i got 0.35m as the height but the answer is 2.3cm
     
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