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# The maximum gauge pressure in a hydraulic lift is 16.8 atm.?

What is the largest size vehicle (kg) it can lift if the diameter of the output line is 25.6 cm?

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- O-360Lv 61 decade agoFavorite Answer
The area of the "output line" (also known as the lift cylinder) is:

D = 25.6 cm = .256m

The area is:

A = π*D^2/4 = .0515 m^2

A standard atmosphere is 101.325 kPa = 101.325 kN/m^2

The pressure is: 16.8*101.325*10^3 = 1.702*10^6 N/m^2

The maximum lift is just less than:

F = P*A = 1.702*10^6*.0515 = 87.6 kN, or 87600 N

This is 87600/9.8 = 8941 kg

- peveyLv 44 years ago
"pooper's" logic became sturdy, yet his conversion ingredient for atm to Pa (N/m²)became off 3 orders of cost; a million atm ? one 0 one.3 kPa word the "ok", kilo, meaning one thousand So multiply his answer via one thousand

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