1. Chapter 12 Outline Fluid Mechanics Density Pressure Gauge pressure Pascal’s law Buoyancy Archimedes’ principle

4. Absolute vs. Gauge Pressure

5. Pressure and Depth Intuitively, we know that pressure increases with depth. If you swim down to the bottom of a deep pool, you can feel the increase in pressure. Consider an element of fluid at rest. The forces acting on it are the pressure from the top, from the bottom, on the sides, and the weight of the element. At rest, so the sum of the forces is zero.

6. Pressure and Depth

7. Since the pressure only depends on the depth, the surface of the fluid in a container must be level, regardless of the shape of the container.

8. Pascal’s Law

9. Pressure Example

10. Hydraulics

11. Buoyancy When an object is immersed in water, it seems to weigh less than in air. This means that there must be some upward force on the object. We call this the buoyant force.

12. Archimedes' Principle

13. Buoyancy Example

14. Chapter 12 Summary Fluid Mechanics