Friction and Elasticity (Hooke's Law)
F
s
≤ μ
s
N
F
k
= μ
k
N
F = -kΔx
stress = F/A
strain = ΔL/L
0
F
s
= static friction
μ
s
= static coefficient of friction
F
k
= kinetic frction
μ
k
= kinetic coefficient of friction
F = spring force
k = spring constant
Δx = amount of extension
Solve