(adsbygoogle = window.adsbygoogle || []).push({}); Is it possible to calculate "hour-glass" parameters using calculus?

The standard hour-glass model drops sand from the top cone to the bottom in an hour.

Is it possible to calculate the mass of sand that would be required for making an hourglass? Further, would it be possible to change the hour-glass into a variable timing device depending on how much sand is in it?

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# Is it possible to calculate hour-glass parameters using calculus?

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