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SCIENCE OF FLUIDS

 Science of Fluids What are_fluids? What is Pressure? What is Hydrostatic Pressure? Surface Tension and Capillary Action? Pascal's Principle Archimedes Principle What is Viscosity? Bernoulli's Principle

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PASCAL'S PRINCIPLE AND HYDRAULICS

1. What is the Mechanical Advantage of a hydraulic car lift similar to that shown above where A1= 2 sq.in. and A2 = 20 sq. in. and the applied force is 100 lbs.
a) 40
b) 60
c) 2
d) 10

2. What does Pascal's Principle state?
a) Any object, wholly or partially immersed in a fluid, is buoyed up by a force equal to the weight of the fluid displaced by the object.
b) any change in pressure applied at any given point of the fluid is transmitted with a decreasing value throughout the fluid.
c) for a fluid with zero viscosity, an increase in the speed of the fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid's potential energy.
d) any change in pressure applied at any given point of the fluid is transmitted undiminished throughout the fluid.

3. A hydraulic press has an input cylinder 1 inch in diameter and an output cylinder 6 inches in diameter. Assuming 100% efficiency, find the force exerted by the output piston when a force of 10 pounds is applied to the input piston.
a) 100 pounds
b) 360 pounds
c) 60 pounds
d) 286 pounds

4. What is the Mechanical Advantage of a lever that can lift a 500 pound weight using a load of 20 pounds.
a)1000
b) 10
c) 20
d) 25

5. How much weight will needed to be applied to a hydraulic system that has a MA of 20 to lift a 1000 pound load.
a) 2000 pounds
b) 500 pounds
c) 50 pounds