Uploaded February 2022 | Updated September 2026, 1 hour ago

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This video uses the Under Pressure HTML5 online simulation from PhET Interactive Simulations to investigate Pascal’s principle. We will use the four windows of the simulation to look at the relationship between pressure and depth, the relationship between pressure and the shape of the container, to define Pascal’s principle and to the determine the density of the mystery fluid and the gravity of the mystery planet.

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Chapters:
00:00 Introduction
1:05 What is Pressure?
5:20 Pressure vs. Depth
9:04 Pressure vs Shape of the Container
11:35 Pascal’s Principle
14:55 Mystery Density
18:05 Mystery Gravity