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WorksheetsFORCE AND PRESSURE
Total questions: 27
Worksheet time: 14mins
In an enclosed system, transmission of pressure exerted on a fluid is uniform throughout the fluid. This statement can be referred to
Hydraulic system
Pascal’s principle
Aerofoil system
Bernoulli’s principle
Diagram shows an operation of fluid through an enclosed system. Calculate the force needed to lift the car?
20 N
60 N
100 N
120 N
Which of the following is not using the hydraulic system in the operation?
Car
Garbage truck
Earth excavator machinery
Racing bike
Diagram shows the application of a hydraulic system to lift a load of 120N. Calculate force, F that is exerted at the piston, P.
5 N
10 N
12 N
15 N
Diagram shows a hydraulic system to lift a 120N load. Piston, P is exerted with force, F. What happened to the pressure at X, Y and Z?
Pressure at X, Y and Z is equal
X has the largest pressure
Y has the largest pressure
Z has the largest pressure
The same pressure is transmitted in the hydraulic system through the liquid. What is the principle involved?
Bernoulli's Principle
Pascal's Principle
Archimedes's Principle
Principle of conservation of momentum
Which of the following is TRUE about the hydraulic system in the diagram?
The force on both pistons are the same
The pressure at the small piston is the same as the pressure at the large piston
The surface area of the small piston and the large piston is the same
The force produced at the large piston is smaller
Area of small pistonForce at small piston= Area of large pistonForce at large piston The diagram shows a driver pressing the brake of his car.
If the driver exerted a force of 100 N on the brake pedal with area of 5 cm2, calculate the force applied to the car's tires. Given the area of tyre's brake is 30 cm2.
10 N
60 N
400 N
600 N
Which of the following is NOT TRUE about the hydraulic system?
The liquid cannot be compressed
The system is used to enlarge the effects of force
The pressure exerted on smaller piston is larger than larger piston
The pressure exerted on smaller piston is transmitted to the larger piston through liquid
Which of the following applies the principle of hydraulic system?
Petrol engine
Refrigerator
Car brake system
Air conditioner
Which of the following is NOT the reason for the usage of liquid in the hydraulic system?
Liquid cannot be compressed
Liquid has no shape
Liquid has higher density
Liquid can transmit the pressure to all directions
Which of the following explains the principle in a hydraulic system?
Fluid has a fixed shape
Fluid has free moving particles
Fluid can be compressed in a enclosed system
Fluid transfers pressure in all directions uniformly in an enclosed system
The following information shows a few examples of devices used in daily life
* Dental chair
* Hydraulic brake
* Hydraulic jack
What is the principle applied by the devices above?
Pascal's principle
Bernoulli's principle
Archimedes principle
The principle of conservation of momentum
Which vehicle or machine applies Pascal's principle?
Diagram shows a hydraulic jack. What is the characteristics of the oil that allows the above instruments to lift the car while we change the car tyres?
Oil cannot be compressed
Oil has a fixed shape
Oil has particles that are closely arranged and compact
Oil has particles that are arranged far apart from each other
What happens in the hydraulic brake system when the car driver presses the brake pedal.
The piston in the main cylinder is pushed inside
The big piston is pushed outside
Pressure will pull the brake shoe
The spring will pull the brake shoe
Diagram shows a hydraulic pump. Which of the following statement is true?
The force F is the same as the weight of the load
The force is greater than the weight of the load
The pressure on piston P is the same as the pressure on piston Q
The pressure on piston P is smaller than the pressure on piston Q.
The faster a fluid moves, the lower the pressure is in the moving fluid compared to the fluid not moving as fast. This is called
Newton's Laws
Bernoulli's Principle
Wright Brothers Priciple
Why is the top of an airplane wing curved?
To create an area of low pressure above the wing
To create an area of high pressure above the wing
To create equal pressure above and below the wing
To make the wing look really cool
The water flows through a venturi tube. Which part has the lowest pressure and highest velocity?
A
B
C
The air blows through a venturi tube. Select the correct answer.
Pressure at C > Pressure at B > Pressure at A
Pressure at B > Pressure at A > Pressure at C
Pressure at A > Pressure at C > Pressure at B
Pressure at A > Pressure at B > Pressure at C
