Can Suction Lift a 20 Meter Water Column Without Exceeding Its Tensile Strength?

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Namrata
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Homework Statement



What suction (or negative pressure) is required to support a column of liquid 20 m high? Does this exceed the tensile strength of water?

Homework Equations



Bulk Modulus = (Change in Pressure/ (Change in Volume/Volume))
Pressure = Force / Area

The Attempt at a Solution



Tensile strength of water = 20 MPa

Pressure = Force / Area

Assume column has a diameter of 1 unit.
The surface area of this column is thus:

Circumference x Height of column + Area of top of column

= 62.83 + 0.79
=63.62 units2


 
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Discussion

Do you know why water rises in a straw when you suck on it?
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