Questions
Block One Oct 15 2002
- In your own words, explain Bernoulli's Principle.
- As a fluid flows thru a pipe how can the pressure be reduced in the fluid?
- What is the difference between hydrostatics and hydraulics?
- What are the advantages of fluid power? at least six points.
- Try to discover an application that uses
- Just a pneumatic system
- Just a hydraulic system
- A combination of both
- What is the difference between pneumatic and a hydraulic system. And can they be used in conjunction with one another?
- The word "Hydraulics" comes the Greek word _______
- Explain the difference between pressure and force.
- In what direction does the buoyant force of a fluid operate and what does it counteract?
- The pressure of a liquid is independent of ____________ and is always the same at ______________________ .
How can this be shown or proven with a paper cup?
Block Two Oct 17 2002
- Give two examples of devices that measure fluid pressure.
- Explain the difference between guage pressure and absolute pressure.
- A block of wood has a density of 0.683 g/cm^{3}. It floats in water. If its volume is 96.7 cm^{3} determine the mass of this block of wood and the buoyancy force of water on this wooden block. If this same piece of wood was immered in alcohol (density 0.790 g/cm^{3}), would it float? what volume of alchol would be displaced by the piece of wood?
- A piece of "gold" jewlery has a mass of 0.800 grams when measured in air. On immersing in water the mass measured is 0.655 grams. Is this pure gold? Explain via calculations.
Note: you must use data on page 31 of your text book to answer this question.
Also; if the jewlery is not pure gold, what percentage by mass is it pure?
- A force such as a hammer blow, is applied to a solid iron bar. Explain what happens to the force as it is transmitted throught the iron bar. How does this differ from a force applied to a fluid.
- State Pascal's Law
- Explain how a hydraulic brake works, sketch a diagram.
- Explain why a hydraulic car hoist works as designed?
Block Three Oct 21 2002
- There are two formulae under the heading Dynamics of Ideal Fluids
What are they and explain each of them in your own words.
- Give three applications of Bernoulli's principle
- In your own words explain Pascal's Principle
- Make sure you can do the problem in the Note I (In one of the blue presentation boxes).