Pressure

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1) A block with lenght of p = 1.5 m, width l = 1 m, height t = 0.5 m and mass m = 300 kg lays on the table.

What is the pressure at the bottom surface of the block?

2) A jar of water with 15 cm of height. Find the pressure of water at the bottom of the jar, ignore the atmospheric pressure and use the acceleration due to gravity g = 10 m/s2 and the density of water 1000 kg/m3!

3) A student measures the pressure of a gas in a tube using below equipment.

If the atmospheric pressure is 76 cm Hg, and h = 3 cm, find the pressure of the gas in the tube!

4) What is the pressure of the gas in the tube on this experiment below?

Use the atmospheric pressure Po = 76 cm Hg, and given h = 3 cm!

5) Given U-pipe filled with water to measure the density of a fluid that then is dropped into the right side of U-pipe.

Find the density of the fluid!

6) A city locates at 300 m above sea level. If the atmospheric pressure at sea level is 76 cmHg, find the air pressure in the city show in cmHg!

7) Given a hydraulic lift as below:

The narrow piston area is 5 cm2 and the wide piston area is 50 cm2. If the weight of the block w = 1800 N, find the magnitude of force F to lift up the block W!

8) A hydraulic lift with piston diameters D1 and D2 as shown below

D1 = 5 cm2 and D2 = 15 cm2. If the weight of the block w = 1800 N, find the minimum force F to lift up the weight w!

9) Argon gas with a volume of 2 m3 and the pressure of 6 atm to be pump into a vacuum tube of 8 m3of volume. What is the pressure of Argon gas in the tube?

A. 24atm

B. 14 atm

C. 4 atm

D. 1,5 atm

10) Given four bodies with each mass is 100 kg.

The least pressure at the bottom surface of the bodies is...

A. 1

B. 2

C. 3

D. 4