Lesson 4

Question 1

Define Pressure

Answer 1

~ Continuous physical force exerted on or against an object by something in contact with it.
~ Pressure = Force/Area
~ P = F/A
~dF = PdA

Question 2

What is the Si Units for Pressure?

Answer 2

N/m2 = Pascal

Question 3

What is Fluid Mechanics

Answer 3

Forces that are acted upon objects submerged in fluids.

Question 4

What happens to pressure as you submerge something deeper into a liquid?

Answer 4

The pressure increases

Question 5

What is Pascals Law

Answer 5

~ Pascal’s law states that when there is an increase in pressure at any point in a confined fluid, there is an equal increase at every other point in the container.
~ A change of pressure in a fluid is transmitted undiminished to the boundary of the container and the rest of the fluid.

Question 6

Define Buoyancy

Answer 6

~ Force of Buoyancy balances the force of gravity if the submerged object in not moving.
~ The magnitude of the buoyant force on an object is equal to the weight of the fluid displaced by the object