Physics Topic Practice

Hydraulics and Pressure in Liquids | GCSE Physics

Hydraulic systems use incompressible liquids to transmit pressure effectively.

Why are liquids used in brake systems instead of gases?

What is Hydraulics and Pressure in Liquids | GCSE Physics?

"The transmission of pressure equally in all directions through an incompressible liquid."

Question 1

What is the resultant force on an object if a 10N force acts right and a 4N force acts left?

Question 2

Which of these is the correct vector equivalent of 'Distance'?

Question 3

An object moves at a constant velocity. What is the resultant force?

Question 4

What is the unit of the spring constant (k)?

Pressure Transmission

Pressure in a liquid is transmitted equally in all directions.

Liquids cannot be compressed, whereas gases can.

Hydraulics can multiply force using pistons of different areas.

Force = Pressure x Area.

Exam Tip

Math Rule: If you apply force to a small area, it creates a pressure that can generate a massive force on a large area.

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