Materials Flashcards
1
Q
Laminar Flow
A
- Streamline
- layers do not mix
2
Q
Turbulent Flow
A
- Not streamline
- Mixing of layers
3
Q
Stoke’s Law
A
viscous drag = 6(pi)(viscocity)rv
4
Q
Stoke’s Law only works if
A
- Low speed
- Small
- Spherical
- Terminal Velocity
- Through a fluid
5
Q
Density =
A
mass / volume
6
Q
Upthrust
A
Weight of fluid displace (DensityxVolumexGravity)
7
Q
Hooke’s Law
A
Stretching Force = Spring Constant x extension
8
Q
What is Hooke’s Law
A
Stretching Force is directly proportional to extension
9
Q
Spring Constant
A
Stiffness
10
Q
Elastic Limit
A
Where material will not return to its original size
11
Q
Gradient of a force extension graph
A
spring constant
12
Q
Hooke’s Law also applies to
A
Compression
13
Q
Area under force extension graph
A
Elastic potential energy
14
Q
Stress
A
A measure of strength (Force/Cross sectional area)
15
Q
Strain
A
A fraction of extension to original length (extension/original length)
