Pressure

The weight of a table is 280 N. The table has four legs. The area of each table leg in contact with the floor is 18 cm2. Calculate the pressure of the table on the floor. Give the correct unit.

Calculate the pressure when a force of 200N presses on an area of 0.40 m2.

Atmospheric pressure is 100.000 Pa. The roof of a building has an area of 50 m2. What force does the atmosphere exert down on the roof?

Which exerts a greater pressure, a force of 200 N acing on 1.0 m2, or the same force acting on 2.0 m2?

The can has three identical holes 1, 2 and 3 on one side, one above the other in a vertical line, as shown in the diagram. Water is shown flowing out of hole 2 and hole 3. Draw on the diagram to show the stream of water flowing from hole 1.

A metal block has a weight of 24 N. The area of this metal block in contact with the ground is 4.0 cm2. Calculate the pressure of this block on the ground.

A learner stands with both feet flat on the floor. The total area of the learner’s foot in contact with the floor is 0.025 m2. The weight of the learner is 650 N. Calculate the pressure that the learner exerts on the floor.

An elephant has a mass of 5000 kg. The area of an elephant’s foot is 0.13 m2. Calculate the pressure exerted by the elephant.

Calculate the pressure exerted by a force of 500 N on an area of 0.02 m².

The diagram shows a mercury barometer. State what is in the space at Y above the mercury.

Some vehicles have wide tyres so that they can drive over soft mud. Explain why the wide tyres enable these vehicles to drive over soft mud.

The diagram shows a metal block on a flat surface. The metal block has mass of 1.6 kg. Calculate the pressure on the flat surface due to the metal block.

Calculate the change in pressure of the water between the surface and a depth of 100 m. Give your answer in standard form. (Density of sea water = 1030 kg/m3; g = 9.8 m/s2)

A device for measuring gas pressure is connected to a gas supply as shown in the diagram. State the name of the measuring device shown in the diagram.

The density of water is 1000 kg/m3. Calculate the pressure due the water on a diver when he is 25 meters under the surface.

Calculate the pressure at the bottom of an oil storage tank of depth 2.5 m. The oil has a density of 980 kg/m2 and g = 10 m/s2.

What is pressure is exerted by a force of 5 x 10^4 N acting on 2.5 m2?

What is the SI unit of pressure?

The pressure inside a car tyre is 250 kPa. Calculate the total force exerted on the inner surface of the tyre if its surface area is 0.64 m2.

Estimate the height of the Earth’s atmosphere using the following data: atmospheric pressure 100 kPa; density of air 1.29 kg/m3.

The diagram shows a mercury barometer. What do barometer measures?

A swimming pool has a base dimension of 25 m and 5 m. The pressure of the water on the bottom is 15000 Pa. What total force does the water exert on the bottom of the pool?

The area of the point of the nail in contact with the wood is 0.065 cm2. The force from the hammer is 400 N. Calculate the pressure exerted by the point of the nail on the wood.

Calculate the depth of the pool if the pressure is 15 kPa. Assume the density of the water is 1000 kg/m3 and g = 10 m/s2.

A girl has a mass of 50 kg. The area of her stiletto heel is 25 mm2. Calculate the pressure exerted by the girl.