Question

The elastic modulus (E) of collagen is 100 MPa, the elastic modulus of elastin is 1 MPa, the strains(ε) are the same for both materials. How many times is stress (σ) arising in collagen greater than stress arising in elastin?

Answer 1

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Answer 2

The stress arising in collagen is 100 times the stress arising in elastin.

Explanation:

The elastic modulus of collagen $E_{1}$ = 100 M pa

The elastic modulus of elastin $E_{2}$  = 1 MPa,

Stress is given by $\sigma = E$ ∈

Since the strains in both materials are same so

$\frac{\sigma_{1} }{\sigma_{2}} = \frac{E_{1} }{E_{2}}$

Put the values of  $E_{1}$ & $E_{2}$ we get

$\frac{\sigma_{1} }{\sigma_{2}} = \frac{100}{1}$

$\sigma_{1}$ = 100 $\sigma_{2}$

Thus the stress arising in collagen is 100 times stress arising in elastin.