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Pressure, force, hydraulic lift problem

  1. Oct 4, 2005 #1
    A hydraulic lift has two connected pistons with cross-sectional areas 25 cm2 and 630 cm2. It is filled with oil of density 690 kg/m3.

    I've found that approx. 63.5 kg of mass must be placed on the small piston to support a car of mass 1600 kg at equal fluid levels.

    but then it asks...

    With the lift in balance with equal fluid levels, a person of mass 100 kg gets into the car. What is the equilibrium height difference in the fluid levels in the pistons?

    I'm stuck here...any hints??
  2. jcsd
  3. Oct 4, 2005 #2


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  4. Oct 4, 2005 #3
    oops, i'm sorry, i couldn't find my original post, i thought it got deleted somehow...sorry about that...
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