Pressure Quiz

Albert want to place trapezium prism shaped block as shown on a table, so that it exert greatest pressure on the table. What face of that block you suggest to Albert to be chosen?

• ABCD

• EFGH

• HGCD

• EFBA

A cube with a  $2\ m$  side is put on the ground. If the mass of the cube is  $480\ kg$ , its maximum pressure is  . . . (take  $g=10\ \frac{m}{s^2}$  )

• 2,40 Pa

• 1,200 Pa

• 9,600 Pa

• 2,400 Pa

The atmospheric pressure is 100,000 Pa. What is the force exerted by atmosphere on a cube surface with 0.5 m side.

• 40,000 N

• 400,000 N

• 50,000 N

• 25,000 N

Look at the figure.
If the density of water is  $1,000\ \frac{kg}{m^3}$   and the gravitational acceleration is  $10\ \frac{m}{s^2}$  then the pressure at point A is . . .

• 50,000 Pa

• 200,000 Pa

• 250,000 Pa

• 100,000 Pa

Consider a sample of water in the tank above. Let us mark a point at each side: A, B, C, and D as shown. What statement is correct about those four point?

• hydrostatic pressure at point A is greater than hydrostatic pressure at point B

• hydrostatic pressure at point B is greater than hydrostatic pressure at point A

• hydrostatic pressure at point C is greater than hydrostatic pressure at point D

• hydrostatic pressure at point D is greater than hydrostatic pressure at point C

There are three vertical forces exert on the sample of water as shown: upward force acted on the bottom surface (  $F$ ) , downward force acted on the top surface ( $F_0$ ) and and gravitational force (  $F_g$ ). If the fluid is completely static, what is the correct relation between them?

•  $F>F_0+F_g$  

•  $F<F_0+F_g$  

•  $F=F_0+F_g$  

•  $F_g=F+F_0$  

A fish swimming in an aquarium which is open to the air. The fish is located 50 cm from the surface of water. If it is given that density of water is  $1,000\ \frac{kg}{m^3}$ , and atmosphere pressure is  $100,000\ Pa$ . What is the total pressure experienced by the fish? (take  $g=10\ \frac{m}{s^2}$  )

• 5,000 Pa

• 101,060 Pa

• 105,000 Pa

• 150,000 Pa

If Archimedes principle applied in this situation, what is the weight of water displaced by the stone?

• 0.50 N

• 0.15 N

• 0.65 N

• 1.5 N

A stone tied up to the spring balance then dipped in the water. After reach a certain depth, the weight of stone decrease as shown. What is the buoyant force exert on the stone?

• 0.15 N

• 1.5 N

• 0.50 N

• 0.65 N

An object has been weight in the air, and its weight is 15.75 N, while its weight in oil is 9.55 N. The buoyant force experienced by the object is . . .

• 1.65 N

• 6.20 N

• 25.3 N

• 150.4 N