Pressure Flashcards
Pressure is defined as
Forced extorted per unit area
Pressure equation=
Force ➗ area
Area is measure in
Meters squared
1N/m 2 is also called
One pascal(Pa)
What doesn’t change
Weight or force doesn’t change but
What does change
The area(surface)
If u stand on a single,e nail what happens versus lying on a bed of nails
Standing on a nail All you body pressure goes on it and it is very sore but lying on a bed of nails doen’t hurt as mulch because there is a larger surface area therfore you weight/force is spread out
What are used for high pressure
Knives
Cheese wire
What are low pressure uses
Tire of tractor
Foundations of building
Overall calculation of pressure
Wx10=force(N)
P=F ➗ A
More surface area =
Less pressure
Less surface area=
More pessure
Fat tyres
Reduce pressure
Thumb tack 📌 point
Increases pressure as it’s smaller relative to the rest of the
Snow shoes
Reduce the pressure
