Test: College Physics

1.

An hourglass is placed on a scale with all its sand in the upper chamber. A short time later, the sand begins to fall into the lower chamber. Which of the following best describes the reading on the scale as a function of time before any sand has accumulated in the bottom chamber?

None of these

The reading on the scale stays the same.

The reading on the scale increases.

The reading on the scale decreases slightly.

The reading on the scale is zero.

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