Rotation in a cylindrical cylinder (fluid)

[hotjohn]

Homework Statement

what's the difference between zs and hc ? in the pictuire , they are both drawn from the bottom of water to the free surface ...

Homework Equations

The Attempt at a Solution

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[Chestermiller]

hc is the height at the very bottom of the liquid surface, and zs is the height at an arbitrary location on the liquid surface.