- #1

sgk777

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- Homework Statement
- A 56.0 kg cheerleader uses an oil-filled hydraulic lift to hold four 130 kg football players at a height of 0.900 m. The diameter of the cheerleader's piston is 18.0 cm.

A) What is the diameter of the football players' piston if the cheerleader and football players are at the same height?

B) What is the diameter of the football players' piston if the football players are held to a height 0.900 m above the cheerleader?

- Relevant Equations
- F1/A1 = F2/A2 + pgh

I solved for part A by using the equation r2 = sqrt(m2/m1) * r1

im having trouble solving for part B, I know that you would use the equation F1/A1 = F2/A2 + pgh and solve for r2, but when I solved for r2, I got an undefined number. Can someone run me through this question?