(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A 55 kg cheerleader uses an oil-filled hydraulic lift to hold four 110 kg football players at a height of 1.0m. If her piston is 16 cm in diameter, what is the diameter of the football players' piston?

2. Relevant equations

F1/A1=F2/A2

A=pi*r^2

F=mg

3. The attempt at a solution

(55)(9.8)/pi(0.08)^2=(440)(9.8)/pi(r^2)

After I did this, I realized that I need to work the height into the equation, but I'm not sure where it would fit in.

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# Homework Help: Hydraulic press

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