- #1

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A hydraulic lift has two connected pistons with cross-sectional areas 5 cm2 and 650 cm2. It is filled with oil of density 720 kg/m3.

Is it the diameter? I dont know

- Thread starter mattmannmf
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- #1

- 172

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A hydraulic lift has two connected pistons with cross-sectional areas 5 cm2 and 650 cm2. It is filled with oil of density 720 kg/m3.

Is it the diameter? I dont know

- #2

- 142

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The cross sectional area in this case is the same as the area of a circle

A hydraulic lift has two connected pistons with cross-sectional areas 5 cm2 and 650 cm2. It is filled with oil of density 720 kg/m3.

Is it the diameter? I dont know

A=pi*r^2

Cross-sectional area means pretty much what it says, the area of a cross-section of the item. In this case a piston. So if you think about a section of a piston and look at it head on, its just a circle.

- #3

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ok thanks

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