2.5 Pressures on Surfaces Flashcards
1
Q
What happens when a force is applied to an object?
A
The force acts over an area
2
Q
What is pressure defined as?
A
It is defined as the force acting per unit
3
Q
What is the equation for pressure?
A
Pressure - (N/m2) = force (N) / area (m2)
4
Q
What is the unit of pressure?
A
(N/m2)
5
Q
What is the unit of pressure a.k.a?
A
Pascal (pa)
6
Q
What do you need to know to find pressure?
A
You need to know the force acting on the surface and what area the force acts.
7
Q
A box weighing 500N is placed on a desk. The area of the bottom surface of the box is 0.25m2. What pressure does the box exert on the desk?
A
Pressure (N/m2) = force (N)/ area (m2)
= 500N/0.25m2
= 2000 N/m2
