Demonstration of pressure in liquids practice exercise 3

The diagram shows a U-tube connected to a tank filled with oil of density 900 kg/m³. The U-tube is open to the atmosphere on one side. The oil level in the tank is 2.5 m above the point where the U-tube is connected. Calculate the pressure at this connection point in Pascals. Take g = 10 N/kg. (2 marks)

The diagram below shows a U-tube connected to a tank filled with oil of density 900 kg/m³. The U-tube is open to the atmosphere on one side. The oil level in the tank is 2.5 m above the point where the U-tube is connected. Calculate the pressure at this connection point in Pascals. Take g = 10 N/kg. (2 marks)

The diagram below shows a U-tube connected to a tank filled with oil of density 900 kg/m³. The U-tube is open to the atmosphere on one side. The oil level in the tank is 2.5 m above the point where the U-tube is connected. Calculate the pressure at this connection point in Pascals. Take g = 10 N/kg. (2 marks)

A bucket is filled with water to a depth of 2 m. Calculate the pressure at the bottom if the density of water is 1000 kg/m³ and g = 10 N/kg. (2 marks)

A bucket is filled with water to a depth of 2 m. Calculate the pressure at the bottom if the density of water is 1000 kg/m³ and g = 10 N/kg. (2 marks)

A dam is filled with water to a height of 40 m. Calculate the pressure at the base of the dam if the density of water is 1000 kg/m³ and g = 9.8 N/kg. Give your answer in both Pascals and N/m². (2 marks)

A dam is filled with water to a height of 40 m. Calculate the pressure at the base of the dam if the density of water is 1000 kg/m³ and g = 9.8 N/kg. Give your answer in both Pascals and N/m². (2 marks)

A hydraulic press has a small piston of radius 5 cm and a large piston of radius 20 cm. A force of 150 N is applied to the small piston. Stating the pascals principle, calculate the force exerted by the large piston. (Take π = 3.14) (3 marks)

A hydraulic press has a small piston of radius 5 cm and a large piston of radius 20 cm. A force of 150 N is applied to the small piston. Stating the pascals principle, calculate the force exerted by the large piston. (Take π = 3.14) (3 marks)

A rectangular gate at the base of a tank is 2 m wide and 1.5 m high. If the depth of water above the top of the gate is 4 m, calculate the total force exerted on the gate. Take density of water = 1000 kg/m³, g = 10 N/kg. (2 marks)

A rectangular gate at the base of a tank is 2 m wide and 1.5 m high. If the depth of water above the top of the gate is 4 m, calculate the total force exerted on the gate. Take density of water = 1000 kg/m³, g = 10 N/kg. (2 marks)

A simple water pump has two pistons. The small piston has an area of 0.01 m² and the large piston has an area of 0.1 m². If a force of 50 N is applied on the small piston, calculate the force on the large piston. (2 marks)

A simple water pump has two pistons. The small piston has an area of 0.01 m² and the large piston has an area of 0.1 m². If a force of 50 N is applied on the small piston, calculate the force on the large piston. (2 marks)

A tank contains an unknown liquid. A pressure gauge at a depth of 3 m reads 30,000 Pa. If g = 10 N/kg, calculate the density of the liquid. (2 marks)

A tank contains an unknown liquid. A pressure gauge at a depth of 3 m reads 30,000 Pa. If g = 10 N/kg, calculate the density of the liquid. (2 marks)

In a swimming pool, point A is 1 m below the surface and point B is 3 m below the surface. Which point experiences greater pressure and why? (1 mark)

The diagram below shows a vertical container filled with water, with three holes at different depths (top, middle, bottom) on the side. Explain why the water from the bottom hole shoots the farthest. (1 mark)

The diagram below shows a vertical container filled with water, with three holes at different depths (top, middle, bottom) on the side. Explain why the water from the bottom hole shoots the farthest. (1 mark)

The diagram below shows a vertical container filled with water, with three holes at different depths (top, middle, bottom) on the side. Explain why the water from the bottom hole shoots the farthest. (1 mark)

Two tanks are filled to the same depth of 2 m — one with fresh water (density 1000 kg/m³) and the other with salty water (density 1025 kg/m³). Which tank has greater pressure at the bottom and why? (2 marks)

Two tanks are filled to the same depth of 2 m. One with fresh water (density 1000 kg/m³) and the other with salty water (density 1025 kg/m³). Which tank has greater pressure at the bottom and why? (2 marks)

Two tanks are filled to the same depth of 2 m. One with fresh water (density 1000 kg/m³) and the other with salty water (density 1025 kg/m³). Which tank has greater pressure at the bottom and why? (2 marks)

Two tanks are filled to the same depth of 2 m. One with fresh water (density 1000 kg/m³) and the other with salty water (density 1025 kg/m³). Which tank has greater pressure at the bottom and why? (2 marks)