What Formula is Used for Part B of the Elephant and Hydraulic Lift Problem?

[jason_r]

Homework Statement

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

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

Homework Equations

deltaF=pg(A1+A2)d2

The Attempt at a Solution

deltaF=pg(A1+A2)d2
i used that formula and found that the distance was 0.35m

 

[abelanger]

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?

 

[jason_r]

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?

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