Fluid Statics

What is the density (in kg/m³) of an object that has a mass of 2kg and a volume of 4m³?

Mathematical Equivalence

ON

A container of water has a mass of 5kg. What is the volume of this container (in m³)? The density of water is 1000 kg/m³. (Neglect the mass of the container.)

Mathematical Equivalence

ON

The following are specific gravities of various objects. Which would float on water? Select two answers.

• Copper - 8.96

• Balsa - 0.20

• Aluminum - 2.70

• Oak - 0.78

What is the specific gravity of a substance whose density is 450 kg/m³?

Mathematical Equivalence

ON

Mercury's specific gravity is about 13.5. What is its density in kg/m³?

Mathematical Equivalence

ON

A 50kg person stands on a square board with sides of 2m. What is the pressure (in Pa) exerted on the ground by the board? (use g=10m/s²)

Mathematical Equivalence

ON

Four cubes lie on a table top as shown, which two exert the same pressure on the table? Select two answers.

• A

• B

• C

• D

What is the pressure (in Pa) at the bottom of a 
swimming pool whose depth is 2m? (g = 10m/s²)

Mathematical Equivalence

ON

What is the absolute pressure (in Pa) at the bottom of a swimming pool whose depth is 2m? (g=10 m/s²)

Mathematical Equivalence

ON

The small piston of a hydraulic lift has an area of 10 cm² and its large piston has an area of 100 cm². A 40 N force is applied to the small piston. What is the weight of the load can be lifted by the large piston?

Mathematical Equivalence

ON