pressure, force, hydraulic lift problem

**huskydc** · Oct4-05, 01:42 PM

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??

**Astronuc** · Oct4-05, 01:59 PM

Please don't double post.

Refer to your original post/thread - http://www.physicsforums.com/showthread.php?t=92217

**huskydc** · Oct4-05, 02:03 PM

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