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What does this mean?

  • Thread starter mattmannmf
  • Start date
  • #1
172
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what does cross sectional area mean?

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
 

Answers and Replies

  • #2
142
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what does cross sectional area mean?

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

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
172
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ok thanks
 

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