Materials Flashcards
(10 cards)
1
Q
Density
A
= mass/volume
2
Q
Upthrust
A
= (Mf)g
weight of fluid displaced
3
Q
Stokes law
A
F = 6πrnv F = viscous drag (N) r = radius n = coefficient of viscosity v = velocity
4
Q
Hookes law
A
force is directly proportional to extension/compression
F = kx
5
Q
Elastic deformation
A
material returns to original shape once the deforming force has been removed
6
Q
Plastic deformation
A
material does not return to original shape once the deforming force has been removed
7
Q
Stress
A
= force/area
8
Q
Strain
A
= extension/original length
9
Q
Young modulus
A
= stress/strain
10
Q
Area under stress strain graph
A
energy per unit volume
