Fluid Mechanics

Hydrostatic Pressure

Video Lecture RealVideo®
8:42 minutes (7:32 - 16:14)

Definition; incompressible fluids and dP/dy=-ρg; demonstration of pressure in paint cans filled with air and water.

Instructor: Prof. Walter Lewin
Prior Knowledge: Pascal's Principle (Beginning of V27)
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Video Lecture RealVideo®
5:06 minutes (30:33 - 35:39)

Cornelius von Drebbel's 5m submarine; overpressure; demonstrating compression of evacuated can.

Instructor: Prof. Walter Lewin
Prior Knowledge: Barometers (23:53 of V27)
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Video Lecture RealVideo®
7:53 minutes (41:41 - 49:34)

Demonstration of maximum snorkeling depth; drinking from a 5m straw.

Instructor: Prof. Walter Lewin
Prior Knowledge: Manometers and Snorkeling (35:39 of V27)
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Buoyancy

Video Lecture RealVideo®
4:30 minutes (23:58 - 28:28)

In an accelerating chamber, an apple is pulled opposite to motion, while balloon is pulled parallel to motion.

Instructor: Prof. Walter Lewin
Prior Knowledge: Balloons (16:36 of V28)
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Bernoulli's Equation

Video Lecture RealVideo®
8:30 minutes (39:49 - 48:19)

Syphoning from gas tanks; failure to blow a ping pong ball into the air; holding ball up by blowing through funnel; turbulence holds ball up.

Instructor: Prof. Walter Lewin
Prior Knowledge: Bernoulli's Equation (28:28 of V28)
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