1. If there is a bucket full of oil and a bucket full of water and you are asked to lift them, which one of the two will require more effort given that the volume of buckets remains the same? a. Water bucket b. Oil bucket c. Equal effort will be required to lift both of them d. None of the mentioned

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Chapter11: Fluid Statics
Section: Chapter Questions
Problem 83PE: The hydraulic system of a backhoe is used to lift a load as shown in Figure 11.45. (a) Calculate the...
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1. If there is a bucket full of oil and a bucket full of water and you are asked to lift them, which one of the two will require more effort given that the volume of buckets remains the same?

a. Water bucket
b. Oil bucket
c. Equal effort will be required to lift both of them
d. None of the mentioned
2. If the fluid is at rest in a container of a narrow mouth at a certain column height and the same fluid is at rest at the same column height in a container having a broad mouth, will the pressure be different at a certain depth from the fluid surface?
a. Pressure will be the same for both.
b. Pressure will be more for narrower mouth
c. Pressure will be less for the narrower mouth.
d. None of the mentioned.
 3. What is the principal cause of action of the buoyant force on a body submerged partially or fully in fluid?  
a. Displacement of fluid due to a submerged body.
b. Development of force due to dynamic action.
c. Internal shear forces mitigating external forces.
d. Pull of gravity
 4. One hundred milliliters of water has a mass of 100 grams. What would be the mass of 50
milliliters of water?
a. 50 grams
b. 100 grams
c. 25 grams
d. 200 grams

 
B. 
1. If the density of air is 1.3 kg/m3. What is the mass of air in an 8m×5m×4m room?
a. 208 kg
b. 210 kg
c. 215 kg
d. 220 kg
2. What is the pressure (in Pascals) at a depth of 1 m below the water surface?
a. 111100 Pa
b. 11100 Pa
c. 1110 Pa
d. 110 Pa
3. A Hydraulic press has a ram of 30 cm diameter and a plunger of 2 cm diameter. It is used for lifting a weight of 35 kN. How much force is required at the plunger?
a.155.5 kN
b. 233.3 kN
c. 466.6 kN
d. 311.1 kN
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