Pressure Principles

The amount of force pushing on an area is the definition of....

• Fluid
• Viscosity
• Barometer
• Pressure

What pressure does a 4000N horse exert on the ground if each foot is 10cm²?

• 40 N/cm²
• 100 N/cm²
• 400 N/cm²
• 10 N/cm²

Where is pressure the greatest on the dam?

• D
• C
• B
• A

Look at the pressure triangle. How do we calculate the area?

• f ÷ a
• f x p
• p x f
• f ÷ p

Pressure is measured in what units

• Newtons
• m/s
• Pascals
• Moles

True or false:
Pressure depends on depth

• true
• false

Pressure can be measured in Pascals (Pa) or Newtons per square meter.

1 Pa = 1N/m²

• True

• False

A person wearing steel toe capped boots and a person wearing stilleto heels stand on a wooden floor. They both have the same weight. Which person exerts a greater pressure on the floor?

• The person wearing the boots because the boots have a larger surface area in contact with the floor
• The person with the stiletto heels because they have a larger surface area in contact with the floor
• The person wearing the boots because the boots have a smaller surface area in contact with the floor 
• The person with the stiletto heels because they have a smaller surface area in contact with the floor

A force is applied in a closed container, the pressure increases the same amount. EX: squeezing a water bottle or toothpaste

• Archimede's Principle
• Pascal's Principle
• Bernoulli's Principle 

What is the pressure in the hydraulic fluid?

• 1210 N
• 484 N/m²
• 8000 N
• 3025 N/m²