CHAPTER 3: TOPIC 4: Pascal’s Principle

Pascal's principle states that pressure applied to a fluid in a confined space is:

• a) Lost as heat

• b) Transmitted equally in all directions

• c) Halved by volume

• d) Only effective on the bottom surface

A hydraulic lift uses Pascal’s principle.

• TRUE

• FALSE

Categorize the following factors into those that affect pressure in a fluid and those that do not affect pressure in a fluid.

Groups:

(a) Affects Pressure

,

(b) Does Not Affect Pressure

• Surface Area

• Volume

• Depth

• Temperature

• Gravity

• Density

Pressure acts equally in all directions at a point in a fluid.

• TRUE

• FALSE

If input force = 10 N and output piston area is 10 times larger, what is the output force?

Mathematical Equivalence

ON

What happens to the pressure applied to a confined fluid?

• A) It decreases with distance

• B) It is transmitted equally in all directions

• C) It only affects the fluid surface

• D) It disappears after a while

If the input piston area is 2 cm² and the output piston area is 10 cm², and the input force is 5 N, calculate the output force.​ ​ (a)  

• 25 N
• 10 N
• 15 N
• 30 N

According to Pascal’s principle, pressure applied to a confined fluid is transmitted undiminished throughout the fluid.

• TRUE

• FALSE

Match hydraulic system terms with their functions:

• Pressure transmitted equally

• Pascal’s principle

• Relationship between velocity & pressure

• Bernoulli’s theorem

• Buoyant force

• Archimedes’ principle

Arrange the statements below to evaluate the correctness of the claim that increasing piston area always increases force.

• Pressure in the fluid is constant throughout.

• Increasing piston area increases output force if pressure is constant.

• The pressure can vary if there is a leak or change in fluid volume.

• Force is calculated as pressure multiplied by piston area.

• Doubling piston area doubles force only under ideal conditions.