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

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SUMMARY

The discussion centers on the formula used for Part B of the Elephant and Hydraulic Lift Problem. Participants reference the equation deltaF=pg(A1+A2)d2 to calculate the force difference, with one user arriving at a height of 0.35m while another calculated 0.48m. The correct answer for the height is identified as 2.3cm. Key insights include the importance of understanding the area of a circle, expressed as (π)(r^2), and the relationship between pressure units, specifically that 1Pa equals 1N/m².

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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
 
Last edited:
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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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