Stress, Strain and Young's Modulus Flashcards
1
Q
What is the calculation for stress?
A
σ = F / A
stress = force / area
2
Q
What is the equation for strain?
A
ε = ΔL / L
strain = extension / original length
3
Q
What is the equation for Young’s Modulus?
A
E = σ / ε
Young’s Modulus = stress / strain
4
Q
How do you know what notation goes with a number?
A
The number of zeros and if it’s smaller it’s minus
e.g. 1m = 1000mm, 3 zeros and mm is smaller so = mm x 10^-3
5
Q
What is x^-3 as a fraction?
A
1 / x^3
