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

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    Hydraulic Lift
AI Thread Summary
The discussion centers on solving Part B of a hydraulic lift problem, where participants are trying to determine the correct formula to use. The equation deltaF=pg(A1+A2)d2 is mentioned, with one user reporting a calculated height of 0.35m, while another claims the correct answer is 2.3cm. There is a reminder about the area of a circle and the relationship between pressure and units. Confusion persists regarding the appropriate formula for the problem. Clarification on the correct approach is needed to resolve the discrepancies in the answers.
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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
 
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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?
 
abelanger said:
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
 
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