F5 Chapter 2.4 Pascal's Principle

Diagram shows a force F2 exerted on the small piston of a hydraulic lift to produce a pressure P1. Pressure P2 is created and a force F2 produced on the larger piston. Which comparison is correct?

A force of 18000N produced to lift up a lorry. Find the value of F1 needed.

• 90N

• 180N

• 270N

• 6000N

Diagram shows a model of the hydraulic elevator that can use to lift a heavy load. Which statement explains the working principle of the hydraulic elevator?

• Pressure changes with fluid velocity

• Pressure is transmitted equally in a hollow cylinder

• Pressure changes with depth in a fluid

• Pressure is transmitted equally in a fluid

Diagram 15 shows a hydraulic press for crushing oil palm into pulp. Which modification on piston Q will increase the pressure in piston R?

• Decrease the height,h

• Decrease the cross-sectional area Q

• Decrease the density of the oil

• Decrease the cross-sectional area of R

Which of the following applied Pascal principle in daily life?

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Which of the following is NOT the application of Pascal's principle

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Diagram shows the piston in the excavator if circled with red colour. Which statement is correct?

• The pressure inside the piston is same as atmospheric pressure

• The pressure inside the piston is equally transmitted

• The fluid used inside the piston is water

• The fluid used inside the piston must be high density

Why oil is used in the hydraulic system?

• High boiling point

• High heat capacity

• Not producing air bubble easily

• Low density

Which statement is correct?

Diagram shows a hydraulic lift that used to lift up a heavy car. How to lower down the heavy car?

• Add more hydraulic oil

• Change the hydraulic oil to water

• open the release valve

• move the lever up down slower