Скачать или смотреть Forces in Fluids: Drag and Buoyancy [IB Physics SL/HL]

This video delves into the forces acting on objects in fluids from Theme A of the IB Physics SL & HL courses. Starting with the concept of density, the video goes on to explain how Archimedes' Principle can be used to determine the buoyant force acting on an object in a fluid, as well as showing how whether an object floats or sinks can be found by comparing the density of the object to that of a fluid. Following a worked example about buoyancy, the video discusses how drag forces lead to objects reaching a terminal velocity. Stokes' Law for predicting viscous drag is then explained.

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Chapters:

0:00 Introduction
0:26 Density
1:12 Buoyancy
2:15 Floating and sinking
4:35 Worked buoyancy example
5:08 Terminal velocity
6:56 Viscous drag (Stokes’ Law)
8:05 Summary