MATERIALS

Question 1

Spring constant

Answer 1

Stiffness
F=Kx
E= 1/2 K x^2
k= spring constant
x=extension

Question 2

Elastic potential energy

Answer 2

EP= 1/2(k)x^2

Question 3

Stress and Strain graph

Answer 3

A= Limit of proportionality
B= Yield strength
C= Ultimate tensile stress
D= Fracture

Question 4

Strain equation

Answer 4

extension/length

Question 5

gradient and area under force extension graph

Answer 5

spring constant- gradient
energy- area