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Fluids

Fluids. Why do things feel lighter when they are under water?. Buoyant Force. Archimedes’ Principle. Buoyant force = weight of fluid displaced. Archimedes Example. Gas bladder (swim bladder) in fish To attain neutral buoyancy. Pressure in Fluids.

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Fluids

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  1. Fluids

  2. Why do things feel lighter when they are under water?

  3. Buoyant Force

  4. Archimedes’ Principle Buoyant force = weight of fluid displaced

  5. Archimedes Example • Gas bladder (swim bladder) in fish • To attain neutral buoyancy

  6. Pressure in Fluids Constant movement of particles exerts pressure as they collide with a surface

  7. Pascal’s Principle • Pressure applied to fluid in a closed container is equally transmitted to all parts of the fluid and the container. • Think toothpaste…

  8. Applications of Pascal’s Principle… • Hydraulic lifts – auto shop, barber chair, etc.

  9. Bernoulli’s Principle The pressure in a fluid decreases as the fluid’s velocity increases.

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